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Submission #707570

# Submission time Handle Problem Language Result Execution time Memory
707570 2023-03-09T10:50:24 Z Dan4Life Raisins (IOI09_raisins) C++17
100 / 100
 666 ms 36140 KB 
#include <bits/stdc++.h>
using namespace std;
int n, m, x,  pre[55][55], dp[55][55][55][55];

int getsum(int a, int b, int c, int d){
    a++,b++,c++,d++;
    return pre[c][d]-pre[c][b-1]-pre[a-1][d]+pre[a-1][b-1];
}

int recur(int x1, int y1, int x2, int y2)
{
    if(x1==x2 and y1==y2) return dp[x1][y1][x2][y2]=0;
    if(dp[x1][y1][x2][y2]!=-1) return dp[x1][y1][x2][y2];
    int ans = (int)1e9;
    for(int x = x1; x < x2; x++)
        ans = min(ans, recur(x1, y1, x, y2)+recur(x+1,y1,x2,y2)+getsum(x1,y1,x2,y2));
    for(int y = y1; y < y2; y++)
        ans = min(ans, recur(x1, y1, x2, y)+recur(x1,y+1,x2,y2)+getsum(x1,y1,x2,y2));
    return dp[x1][y1][x2][y2]=ans;
}

int32_t main()
{
    cin >> n >> m; memset(dp, -1, sizeof(dp));
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            cin >> x; pre[i+1][j+1]+=pre[i+1][j]+pre[i][j+1]-pre[i][j]+x;
        }
    }
    cout << recur(0,0,n-1,m-1);
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 36052 KB Output is correct
2 Correct 15 ms 36028 KB Output is correct
3 Correct 15 ms 36108 KB Output is correct
4 Correct 15 ms 36088 KB Output is correct
5 Correct 14 ms 36108 KB Output is correct
6 Correct 17 ms 36052 KB Output is correct
7 Correct 16 ms 36000 KB Output is correct
8 Correct 23 ms 36052 KB Output is correct
9 Correct 29 ms 36012 KB Output is correct
10 Correct 35 ms 36104 KB Output is correct
11 Correct 31 ms 36100 KB Output is correct
12 Correct 75 ms 36116 KB Output is correct
13 Correct 118 ms 36112 KB Output is correct
14 Correct 44 ms 36116 KB Output is correct
15 Correct 178 ms 36132 KB Output is correct
16 Correct 25 ms 36052 KB Output is correct
17 Correct 65 ms 36124 KB Output is correct
18 Correct 347 ms 36124 KB Output is correct
19 Correct 569 ms 36052 KB Output is correct
20 Correct 666 ms 36140 KB Output is correct