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Submission #771866

# Submission time Handle Problem Language Result Execution time Memory
771866 2023-07-03T10:39:38 Z BlockOG Raisins (IOI09_raisins) C++14
100 / 100
 132 ms 29352 KB 
#include <iostream>
#include <vector>
#include <utility>
#include <climits>

using namespace std;

/*
2 3
2 7 5
1 9 5

*/



int main() {
    int n, m; cin >> n >> m;

    vector<vector<int>> nums(n, vector<int>(m));
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            cin >> nums[i][j];

    vector<vector<int>> ps(n + 1, vector<int>(m + 1));
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            ps[i + 1][j + 1] = nums[i][j] + ps[i + 1][j] + ps[i][j + 1] - ps[i][j];

    vector<vector<vector<vector<int>>>> dp(n, vector<vector<vector<int>>>(m, vector<vector<int>>(n, vector<int>(m))));
    for (int a = n - 1; a >= 0; a--) {
        for (int b = m - 1; b >= 0; b--) {
            for (int c = a; c < n; c++) {
                for (int d = b; d < m; d++) {
                    if (a == c && b == d) continue;

                    dp[a][b][c][d] = ps[n][m] + 1e9;
                    int raisins = ps[c + 1][d + 1] - ps[c + 1][b] - ps[a][d + 1] + ps[a][b];
                    for (int i = a; i < c; i++)
                        dp[a][b][c][d] = min(dp[a][b][c][d], raisins + dp[a][b][i][d] + dp[i + 1][b][c][d]);
                    for (int j = b; j < d; j++)
                        dp[a][b][c][d] = min(dp[a][b][c][d], raisins + dp[a][b][c][j] + dp[a][j + 1][c][d]);
                }
            }
        }
    }

    cout << dp[0][0][n - 1][m - 1] << endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 1364 KB Output is correct
9 Correct 4 ms 1876 KB Output is correct
10 Correct 6 ms 2388 KB Output is correct
11 Correct 4 ms 2132 KB Output is correct
12 Correct 16 ms 5736 KB Output is correct
13 Correct 21 ms 8300 KB Output is correct
14 Correct 6 ms 2912 KB Output is correct
15 Correct 25 ms 9476 KB Output is correct
16 Correct 3 ms 1748 KB Output is correct
17 Correct 11 ms 4804 KB Output is correct
18 Correct 65 ms 18464 KB Output is correct
19 Correct 118 ms 26560 KB Output is correct
20 Correct 132 ms 29352 KB Output is correct