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Submission #840473

# Submission time Handle Problem Language Result Execution time Memory
840473 2023-08-31T12:04:36 Z overwatch9 Raisins (IOI09_raisins) C++17
30 / 100
 118 ms 48980 KB 
#include <iostream>
#include <vector>
using namespace std;
vector <vector <int>> grid;
vector <vector <int>> pfx;
const int maxn = 50;
int dp[maxn][maxn][maxn][maxn];
int solve(int r1, int r2, int c1, int c2) {
    if (r1 == r2 && c1 == c2)
        return 0;
    if (dp[r1][r2][c1][c2] != -1)
        return dp[r1][r2][c1][c2];
    int ans = 1e9;
    int x = pfx[r2][c2] - pfx[r2][c1-1] - pfx[r1-1][c2] + pfx[r2-1][c1-1];
    for (int i = r1; i < r2; i++) {
        ans = min(ans, solve(r1, i, c1, c2) + solve(i+1, r2, c1, c2) + x);
    }
    for (int i = c1; i < c2; i++) {
        ans = min(ans, solve(r1, r2, c1, i) + solve(r1, r2, i+1, c2) + x);
    }
    dp[r1][r2][c1][c2] = ans;
    return ans;
}
int main() {
    int n, m;
    cin >> n >> m;
    grid = pfx = vector <vector <int>> (n+1, vector <int> (m+1));
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++)
            cin >> grid[i][j];
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            for (int l = 1; l <= m; l++) {
                for (int k = 1; k <= m; k++)
                    dp[i][j][l][k] = -1;
            }
        }
    }

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            pfx[i][j] = grid[i][j];
            pfx[i][j] += pfx[i-1][j] + pfx[i][j-1] - pfx[i-1][j-1];
        }
    }

    cout << solve(1, n, 1, m) << '\n';
}

Subtask #1
30.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Correct 1 ms 340 KB Output is correct
5 Incorrect 1 ms 468 KB Output isn't correct
6 Correct 1 ms 852 KB Output is correct
7 Incorrect 1 ms 1492 KB Output isn't correct
8 Incorrect 3 ms 2996 KB Output isn't correct
9 Incorrect 7 ms 4948 KB Output isn't correct
10 Incorrect 7 ms 5844 KB Output isn't correct
11 Incorrect 5 ms 4052 KB Output isn't correct
12 Correct 16 ms 10324 KB Output is correct
13 Incorrect 27 ms 12244 KB Output isn't correct
14 Incorrect 7 ms 4564 KB Output isn't correct
15 Incorrect 31 ms 13652 KB Output isn't correct
16 Incorrect 6 ms 9428 KB Output isn't correct
17 Incorrect 16 ms 14420 KB Output isn't correct
18 Incorrect 72 ms 22040 KB Output isn't correct
19 Correct 118 ms 23064 KB Output is correct
20 Runtime error 27 ms 48980 KB Execution killed with signal 11