oj.uz

Submission #1040878

# Submission time Handle Problem Language Result Execution time Memory
1040878 2024-08-01T11:18:38 Z lovrot Raisins (IOI09_raisins) C++17
30 / 100
 57 ms 52048 KB 
#include <cstdio>
#include <cstring> 
#include <algorithm> 

#define debug(...) fprintf(stderr, __VA_ARGS__)

using namespace std;

typedef long long ll;

const int N = 51;
const ll OO = 0x7FFFFFFFFFFFFFFF;

int n, m;
ll sum[N][N];
ll dp[N][N][N][N];

int main() { 
	scanf("%d%d", &n, &m);
	for(int i = 1; i <= n; ++i) { 
		for(int j = 1; j <= m; ++j) { 
			scanf("%lld", &sum[i][j]);
			sum[i][j] += sum[i - 1][j] + sum[i][j - 1] - sum[i - 1][j - 1];
		}
	}

	for(int i = 1; i <= n; ++i) {
		for(int j = 1; j <= m; ++j) { 
			dp[i][j][i][j] = 0;
			for(int k = i; k > 0; --k) { 
				for(int l = j - (k == i); l > 0; --l) { 
					ll &d = dp[i][j][k][l];
					d = OO;

					for(int x = k; x < i; ++x) { 
						d = min(d, dp[i][j][x + 1][l] + dp[x][j][k][l]);	
					}

					for(int y = l; y < j; ++y) { 
						d = min(d, dp[i][j][k][y + 1] + dp[i][y][k][l]);	
					}

					d += sum[i][j] - sum[i][l - 1] - sum[k - 1][l] + sum[k - 1][l - 1];
//					printf("%d %d %d %d : %d\n", i, j, k, l, dp[i][j][k][l]);
				}
			}
		}
	}

	printf("%lld\n", dp[n][m][1][1]);
	return 0;
}

Compilation message

raisins.cpp: In function 'int main()':
raisins.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
raisins.cpp:22:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |    scanf("%lld", &sum[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
30.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Incorrect 0 ms 4444 KB Output isn't correct
5 Incorrect 1 ms 8540 KB Output isn't correct
6 Correct 1 ms 10588 KB Output is correct
7 Incorrect 1 ms 16732 KB Output isn't correct
8 Incorrect 2 ms 18780 KB Output isn't correct
9 Incorrect 3 ms 24924 KB Output isn't correct
10 Incorrect 4 ms 26972 KB Output isn't correct
11 Incorrect 3 ms 20828 KB Output isn't correct
12 Incorrect 8 ms 33116 KB Output isn't correct
13 Incorrect 12 ms 37392 KB Output isn't correct
14 Incorrect 4 ms 22876 KB Output isn't correct
15 Correct 12 ms 39256 KB Output is correct
16 Incorrect 4 ms 41308 KB Output isn't correct
17 Incorrect 7 ms 43356 KB Output isn't correct
18 Incorrect 30 ms 49676 KB Output isn't correct
19 Correct 48 ms 51708 KB Output is correct
20 Incorrect 57 ms 52048 KB Output isn't correct