Submission #893149

#	Time	Username	Problem	Language	Result	Execution time	Memory
893149		Macker	Raisins (IOI09_raisins)	C++17	100 / 100	354 ms	29272 KiB

raisins

#include <bits/stdc++.h>
 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")

using namespace std;
typedef long long ll;
typedef long double ld;
#define all(v) v.begin(), v.end()
#define ckmin(a, b) a = min(a, b)

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m; cin >> n >> m;
    vector<vector<vector<vector<int>>>> dp(n, vector<vector<vector<int>>>(m, vector<vector<int>>(n, vector<int>(m, INT_MAX/5))));
    vector<vector<int>> sum(n + 1, vector<int>(m + 1));
    vector<vector<int>> v(n, vector<int>(m));
    sum.resize(n, vector<int>(m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> v[i][j];
            sum[i + 1][j + 1] = sum[i][j + 1] + sum[i + 1][j] - sum[i][j] + v[i][j];
            dp[i][j][i][j] = 0;
        }
    }
    for (int w = 0; w < n; w++)
    for (int h = 0; h < m; h++)
    for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) {
        if(i + w >= n) continue;
        if(j + h >= m) continue;
        int s = sum[i + w + 1][j + h + 1] - sum[i + w + 1][j] - sum[i][j + h + 1] + sum[i][j];
        for (int k = i; k < i + w; k++) {
            ckmin(dp[i][j][i + w][j + h], dp[i][j][k][j + h] + dp[k + 1][j][i + w][j + h] + s);
        }
        for (int k = j; k < j + h; k++) {
            ckmin(dp[i][j][i + w][j + h], dp[i][j][i + w][k] + dp[i][k + 1][i + w][j + h] + s);
        }
    }
    cout << dp[0][0][n - 1][m - 1] << "\n";
}

• Subtask 1: 100 / 100