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  1. #include<iostream>
  2. #include<fstream>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. 	int grid[80][80];
  9. 	int n;
  10. 	char ch;
  11.  
  12. 	ifstream fin("p081_matrix.txt");
  13.  
  14. 	for(int i=0;i<80;i++)
  15. 	{
  16. 		for(int j=0;j<80;j++)
  17. 		{
  18. 			fin>>n;
  19. 			grid[i][j] = n;
  20. 			fin>>ch;
  21.  
  22. 		}
  23. 	}
  24.  
  25.  	int gridSize=80;
  26.  
  27. 	//calculate the solution for bottom and right
  28. 	for (int i = gridSize - 2; i >= 0; i--) {
  29. 	    grid[gridSize - 1][ i] += grid[gridSize - 1 ][i+1];
  30. 	    grid[i][gridSize - 1] += grid[i+1 ][gridSize - 1];
  31. 	}
  32.  
  33. 	for (int i = gridSize - 2; i >= 0; i--) {
  34.     	for (int j = gridSize - 2; j >= 0; j--) {
  35.         	grid[i ][j] += min(grid[i + 1 ][j], grid[i ][j + 1]);
  36.     	}
  37. 	}
  38.  
  39. 	cout<<grid[0][0];
  40.  
  41. 	fin.close();
  42. }
Success #stdin #stdout 0s 16048KB
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https://ideone.com/79V6Wx
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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