Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here is the equivalent C code for the provided Python program. The function `solve_dp` takes a pointer to an array of floats, the size of the array, and the number of lines left as arguments.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; float dp[n + 1][lines_left + 1][10]; // Initialize dp array with a large value for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large float value } } } // Initialize how as -1 indicating no decision made int how[n + 1][lines_left + 1][10]; for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { how[i][j][k] = -1; } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Not choosing the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Choosing to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; // Note: taken_lines array is not used in the return value, but you can define it if needed // int taken_lines[n]; // int taken_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // taken_lines[taken_count++] = n - i; // Uncomment if you want to store taken lines i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float arr[] = {1.0, 2.0, 3.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; float dp[n + 1][lines_left + 1][10]; // Initialize dp array with a large value for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large float value } } } // Initialize how as -1 indicating no decision made int how[n + 1][lines_left + 1][10]; for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { how[i][j][k] = -1; } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Not choosing the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Choosing to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; // Note: taken_lines array is not used in the return value, but you can define it if needed // int taken_lines[n]; // int taken_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // taken_lines[taken_count++] = n - i; // Uncomment if you want to store taken lines i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float arr[] = {1.0, 2.0, 3.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; float dp[n + 1][lines_left + 1][10]; // Initialize dp array with a large value for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large float value } } } // Initialize how as -1 indicating no decision made int how[n + 1][lines_left + 1][10]; for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { how[i][j][k] = -1; } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Not choosing the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Choosing to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; // Note: taken_lines array is not used in the return value, but you can define it if needed // int taken_lines[n]; // int taken_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // taken_lines[taken_count++] = n - i; // Uncomment if you want to store taken lines i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int __delete_this__main() { float arr[] = {1.0, 2.0, 3.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } #include<stdio.h> #include<stdlib.h> int main() { float arr[] = {71, 89, 34, 63, 19, 94, 54, 61, 88, 20, 66, 46, 26, 87, 55, 81, 6, 2, 72, 75, 98, 78, 24, 95, 73, 7, 56, 48, 14, 99, 64, 51, 69, 77, 28, 47, 8, 22, 49, 3, 62, 32, 10, 82, 35, 18, 85, 60, 83, 23, 5, 40, 41, 68, 53, 52, 44, 45, 65, 84, 93, 25, 13, 1, 31, 11, 12, 97, 38, 0, 43, 90, 36, 70, 33, 17, 21, 30, 16, 15, 74, 67, 58, 37, 39, 96, 79, 29, 27, 92, 86, 9, 80, 42, 57, 91, 59, 4, 76, 50}; int answer = solve_dp(arr, 100, 100); int expected = 11290; if (answer != expected) { printf("Wrong answer; got %d instead of %d.\n", answer, expected); exit(1); } printf("All tests passed\n"); } |
All tests passed
Testing if the previous output contains the string All tests passed
: True
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Certainly! Below is the equivalent C implementation of the provided Python `solve_dp` function, adhering closely to the original algorithm and structure.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large number and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; } } } // Base case dp[n][0][0] = 0; // Fill the dp and how tables for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (not used in this implementation since only the cost is returned) int i = 0, j = lines_left, k = 6; int taken_lines[n]; // Just for reconstruction if needed int line_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line taken_lines[line_count++] = n - i; i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } int main() { // Example usage float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large number and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; } } } // Base case dp[n][0][0] = 0; // Fill the dp and how tables for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (not used in this implementation since only the cost is returned) int i = 0, j = lines_left, k = 6; int taken_lines[n]; // Just for reconstruction if needed int line_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line taken_lines[line_count++] = n - i; i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } int main() { // Example usage float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large number and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; } } } // Base case dp[n][0][0] = 0; // Fill the dp and how tables for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (not used in this implementation since only the cost is returned) int i = 0, j = lines_left, k = 6; int taken_lines[n]; // Just for reconstruction if needed int line_count = 0; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line taken_lines[line_count++] = n - i; i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } int __delete_this__main() { // Example usage float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } #include<stdio.h> #include<stdlib.h> int main() { float arr[] = {71, 89, 34, 63, 19, 94, 54, 61, 88, 20, 66, 46, 26, 87, 55, 81, 6, 2, 72, 75, 98, 78, 24, 95, 73, 7, 56, 48, 14, 99, 64, 51, 69, 77, 28, 47, 8, 22, 49, 3, 62, 32, 10, 82, 35, 18, 85, 60, 83, 23, 5, 40, 41, 68, 53, 52, 44, 45, 65, 84, 93, 25, 13, 1, 31, 11, 12, 97, 38, 0, 43, 90, 36, 70, 33, 17, 21, 30, 16, 15, 74, 67, 58, 37, 39, 96, 79, 29, 27, 92, 86, 9, 80, 42, 57, 91, 59, 4, 76, 50}; int answer = solve_dp(arr, 100, 100); int expected = 11290; if (answer != expected) { printf("Wrong answer; got %d instead of %d.\n", answer, expected); exit(1); } printf("All tests passed\n"); } |
All tests passed
Testing if the previous output contains the string All tests passed
: True
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Certainly! Below is the rewritten version of the provided Python program in C, with the appropriate type signature for the `solve_dp` function.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Initialize 3D arrays for dp and how float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large value and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for "infinity" how[i][j][k] = -1; // No decision made } } } // Base case for (int j = 0; j <= lines_left; j++) { dp[n][j][0] = 0; // If no more items, cost is 0 } // Fill the dp and how tables for (int i = n - 1; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { // Option 1: don't take the line if (k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Indicating choosing not to take the line } } // Option 2: take the line if (j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Indicating choosing to take the line } } } } } // Reconstruct the solution (if needed) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line printf("Take line: %d\n", n - i); // Adjust as needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example array int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Initialize 3D arrays for dp and how float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large value and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for "infinity" how[i][j][k] = -1; // No decision made } } } // Base case for (int j = 0; j <= lines_left; j++) { dp[n][j][0] = 0; // If no more items, cost is 0 } // Fill the dp and how tables for (int i = n - 1; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { // Option 1: don't take the line if (k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Indicating choosing not to take the line } } // Option 2: take the line if (j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Indicating choosing to take the line } } } } } // Reconstruct the solution (if needed) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line printf("Take line: %d\n", n - i); // Adjust as needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example array int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Initialize 3D arrays for dp and how float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize dp with a large value and how with -1 for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for "infinity" how[i][j][k] = -1; // No decision made } } } // Base case for (int j = 0; j <= lines_left; j++) { dp[n][j][0] = 0; // If no more items, cost is 0 } // Fill the dp and how tables for (int i = n - 1; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { // Option 1: don't take the line if (k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Indicating choosing not to take the line } } // Option 2: take the line if (j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Indicating choosing to take the line } } } } } // Reconstruct the solution (if needed) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line printf("Take line: %d\n", n - i); // Adjust as needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int __delete_this__main() { float graph[] = {1.0, 2.0, 3.0, 4.0}; // Example array int size = sizeof(graph) / sizeof(graph[0]); int lines_left = 2; float result = solve_dp(graph, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } #include<stdio.h> #include<stdlib.h> int main() { float arr[] = {71, 89, 34, 63, 19, 94, 54, 61, 88, 20, 66, 46, 26, 87, 55, 81, 6, 2, 72, 75, 98, 78, 24, 95, 73, 7, 56, 48, 14, 99, 64, 51, 69, 77, 28, 47, 8, 22, 49, 3, 62, 32, 10, 82, 35, 18, 85, 60, 83, 23, 5, 40, 41, 68, 53, 52, 44, 45, 65, 84, 93, 25, 13, 1, 31, 11, 12, 97, 38, 0, 43, 90, 36, 70, 33, 17, 21, 30, 16, 15, 74, 67, 58, 37, 39, 96, 79, 29, 27, 92, 86, 9, 80, 42, 57, 91, 59, 4, 76, 50}; int answer = solve_dp(arr, 100, 100); int expected = 11290; if (answer != expected) { printf("Wrong answer; got %d instead of %d.\n", answer, expected); exit(1); } printf("All tests passed\n"); } |
Take line: 98
Take line: 91
Take line: 83
Take line: 75
Take line: 66
Take line: 58
Take line: 50
Take line: 43
Take line: 34
Take line: 25
Take line: 17
Take line: 9
Take line: 1
Wrong answer; got 291 instead of 11290.
Testing if the previous output contains the string All tests passed
: False
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's the equivalent C program for your provided Python function. The function signature has been adapted to match the specified type signature, and I've included necessary memory allocations and the main function to demonstrate usage.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float*** dp = (float***)malloc((n + 1) * sizeof(float**)); int*** how = (int***)malloc((n + 1) * sizeof(int**)); for (int i = 0; i <= n; i++) { dp[i] = (float**)malloc((lines_left + 1) * sizeof(float*)); how[i] = (int**)malloc((lines_left + 1) * sizeof(int*)); for (int j = 0; j <= lines_left; j++) { dp[i][j] = (float*)malloc(10 * sizeof(float)); how[i][j] = (int*)malloc(10 * sizeof(int)); } } // Initialize arrays for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large value how[i][j][k] = -1; // -1 indicates no decision made } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Chose not to take the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Chose to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Here you could store the taken line information if needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } // Free allocated memory for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { free(dp[i][j]); free(how[i][j]); } free(dp[i]); free(how[i]); } free(dp); free(how); return dp[0][lines_left][6]; } int main() { float arr[] = {1, 2, 3, 4, 5}; // Example array int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 3; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float*** dp = (float***)malloc((n + 1) * sizeof(float**)); int*** how = (int***)malloc((n + 1) * sizeof(int**)); for (int i = 0; i <= n; i++) { dp[i] = (float**)malloc((lines_left + 1) * sizeof(float*)); how[i] = (int**)malloc((lines_left + 1) * sizeof(int*)); for (int j = 0; j <= lines_left; j++) { dp[i][j] = (float*)malloc(10 * sizeof(float)); how[i][j] = (int*)malloc(10 * sizeof(int)); } } // Initialize arrays for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large value how[i][j][k] = -1; // -1 indicates no decision made } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Chose not to take the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Chose to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Here you could store the taken line information if needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } // Free allocated memory for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { free(dp[i][j]); free(how[i][j]); } free(dp[i]); free(how[i]); } free(dp); free(how); return dp[0][lines_left][6]; } int main() { float arr[] = {1, 2, 3, 4, 5}; // Example array int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 3; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Allocate memory for dp and how arrays float*** dp = (float***)malloc((n + 1) * sizeof(float**)); int*** how = (int***)malloc((n + 1) * sizeof(int**)); for (int i = 0; i <= n; i++) { dp[i] = (float**)malloc((lines_left + 1) * sizeof(float*)); how[i] = (int**)malloc((lines_left + 1) * sizeof(int*)); for (int j = 0; j <= lines_left; j++) { dp[i][j] = (float*)malloc(10 * sizeof(float)); how[i][j] = (int*)malloc(10 * sizeof(int)); } } // Initialize arrays for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { dp[i][j][k] = FLT_MAX; // Use FLT_MAX for a large value how[i][j][k] = -1; // -1 indicates no decision made } } } for (int i = n; i >= 0; i--) { for (int j = 0; j <= lines_left; j++) { for (int k = 0; k < 10; k++) { if (i == n && j == 0) { dp[i][j][k] = 0; } else { // Option 1: don't take the line if (i < n && k < 9) { if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Chose not to take the line } } // Option 2: take the line if (i < n && j > 0) { float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Chose to take the line } } } } } } // Reconstruct the solution int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Here you could store the taken line information if needed i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } // Free allocated memory for (int i = 0; i <= n; i++) { for (int j = 0; j <= lines_left; j++) { free(dp[i][j]); free(how[i][j]); } free(dp[i]); free(how[i]); } free(dp); free(how); return dp[0][lines_left][6]; } int __delete_this__main() { float arr[] = {1, 2, 3, 4, 5}; // Example array int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 3; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Result: %f\n", result); return 0; } #include<stdio.h> #include<stdlib.h> int main() { float arr[] = {71, 89, 34, 63, 19, 94, 54, 61, 88, 20, 66, 46, 26, 87, 55, 81, 6, 2, 72, 75, 98, 78, 24, 95, 73, 7, 56, 48, 14, 99, 64, 51, 69, 77, 28, 47, 8, 22, 49, 3, 62, 32, 10, 82, 35, 18, 85, 60, 83, 23, 5, 40, 41, 68, 53, 52, 44, 45, 65, 84, 93, 25, 13, 1, 31, 11, 12, 97, 38, 0, 43, 90, 36, 70, 33, 17, 21, 30, 16, 15, 74, 67, 58, 37, 39, 96, 79, 29, 27, 92, 86, 9, 80, 42, 57, 91, 59, 4, 76, 50}; int answer = solve_dp(arr, 100, 100); int expected = 11290; if (answer != expected) { printf("Wrong answer; got %d instead of %d.\n", answer, expected); exit(1); } printf("All tests passed\n"); } |
Wrong answer; got -2147483648 instead of 11290.
Testing if the previous output contains the string All tests passed
: False
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a python program. Please rewrite it in c with the type signature float solve_dp(float* arr, int size, int lines_left) def solve_dp(graph, lines_left): n = len(graph) dp = [[[1e9 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] # Initialize how as -1 indicating no decision made how = [[[-1 for _ in range(10)] for _ in range(lines_left + 1)] for _ in range(n + 1)] for i in range(n, -1, -1): for j in range(lines_left + 1): for k in range(10): if i == n and j == 0: dp[i][j][k] = 0 else: # Option 1: don't take the line if i < n and k < 9: if dp[i + 1][j][k + 1] < dp[i][j][k]: dp[i][j][k] = dp[i + 1][j][k + 1] how[i][j][k] = k + 1 # Representing choosing not to take the line # Option 2: take the line if i < n and j > 0: cost = graph[i] + (k - 8)**2 if cost + dp[i + 1][j - 1][0] < dp[i][j][k]: dp[i][j][k] = cost + dp[i + 1][j - 1][0] how[i][j][k] = 0 # Representing choosing to take the line # Reconstruct the solution i, j, k = 0, lines_left, 6 taken_lines = [] while i < n: if how[i][j][k] == 0: # Chose to take the line taken_lines.append(n - i) i += 1 j -= 1 k = 0 else: # Chose not to take the line i += 1 k += 1 return dp[0][lines_left][6]
Here's a C implementation of the provided Python function `solve_dp`. The function uses dynamic programming to solve the problem and has the specified type signature.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Define the dimensions for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize the dp array with a very large number for (int i = 0; i <= n; ++i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; // Initialize how as -1 indicating no decision made } } } // Base case dp[n][0][0] = 0; for (int i = n; i >= 0; --i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (optional) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Example of what you can do with taken lines // printf("Line taken: %d\n", n - i); i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float arr[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Define the dimensions for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize the dp array with a very large number for (int i = 0; i <= n; ++i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; // Initialize how as -1 indicating no decision made } } } // Base case dp[n][0][0] = 0; for (int i = n; i >= 0; --i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (optional) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Example of what you can do with taken lines // printf("Line taken: %d\n", n - i); i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int main() { float arr[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | #include <stdio.h> #include <stdlib.h> #include <float.h> float solve_dp(float* arr, int size, int lines_left) { int n = size; // Define the dimensions for dp and how arrays float dp[n + 1][lines_left + 1][10]; int how[n + 1][lines_left + 1][10]; // Initialize the dp array with a very large number for (int i = 0; i <= n; ++i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { dp[i][j][k] = FLT_MAX; how[i][j][k] = -1; // Initialize how as -1 indicating no decision made } } } // Base case dp[n][0][0] = 0; for (int i = n; i >= 0; --i) { for (int j = 0; j <= lines_left; ++j) { for (int k = 0; k < 10; ++k) { if (i < n && k < 9) { // Option 1: don't take the line if (dp[i + 1][j][k + 1] < dp[i][j][k]) { dp[i][j][k] = dp[i + 1][j][k + 1]; how[i][j][k] = k + 1; // Representing choosing not to take the line } } if (i < n && j > 0) { // Option 2: take the line float cost = arr[i] + (k - 8) * (k - 8); if (cost + dp[i + 1][j - 1][0] < dp[i][j][k]) { dp[i][j][k] = cost + dp[i + 1][j - 1][0]; how[i][j][k] = 0; // Representing choosing to take the line } } } } } // Reconstruct the solution (optional) int i = 0, j = lines_left, k = 6; while (i < n) { if (how[i][j][k] == 0) { // Chose to take the line // Example of what you can do with taken lines // printf("Line taken: %d\n", n - i); i++; j--; k = 0; } else { // Chose not to take the line i++; k++; } } return dp[0][lines_left][6]; } // Example usage int __delete_this__main() { float arr[] = {1.0, 2.0, 3.0, 4.0}; // Example input int size = sizeof(arr) / sizeof(arr[0]); int lines_left = 2; // Example lines left float result = solve_dp(arr, size, lines_left); printf("Minimum cost: %f\n", result); return 0; } #include<stdio.h> #include<stdlib.h> int main() { float arr[] = {71, 89, 34, 63, 19, 94, 54, 61, 88, 20, 66, 46, 26, 87, 55, 81, 6, 2, 72, 75, 98, 78, 24, 95, 73, 7, 56, 48, 14, 99, 64, 51, 69, 77, 28, 47, 8, 22, 49, 3, 62, 32, 10, 82, 35, 18, 85, 60, 83, 23, 5, 40, 41, 68, 53, 52, 44, 45, 65, 84, 93, 25, 13, 1, 31, 11, 12, 97, 38, 0, 43, 90, 36, 70, 33, 17, 21, 30, 16, 15, 74, 67, 58, 37, 39, 96, 79, 29, 27, 92, 86, 9, 80, 42, 57, 91, 59, 4, 76, 50}; int answer = solve_dp(arr, 100, 100); int expected = 11290; if (answer != expected) { printf("Wrong answer; got %d instead of %d.\n", answer, expected); exit(1); } printf("All tests passed\n"); } |
All tests passed
Testing if the previous output contains the string All tests passed
: True