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Submission #715411

# Submission time Handle Problem Language Result Execution time Memory
715411 2023-03-26T16:09:26 Z Toxtaq Raisins (IOI09_raisins) C++17
100 / 100
 585 ms 26836 KB 
#include<bits/stdc++.h>
using namespace std;
int n, m;
vector<vector<int>>chocolate, pref;
int table[51][51][51][51];
int rec(int x1, int y1, int x2, int y2){
    int cnt = pref[x2][y2] - pref[x1 - 1][y2] - pref[x2][y1 - 1] + pref[x1 - 1][y1 - 1];
    int res = 1e9;
    if(x1 == x2 && y1 == y2)return 0;
    if(table[x1][y1][x2][y2] != -1)return table[x1][y1][x2][y2];
    if(x1 != x2){
        for(int i = x1;i < x2;++i){
            res = min(res, rec(x1, y1, i, y2) + rec(i + 1, y1, x2, y2) + cnt);
        }
    }
    if(y1 != y2){
        for(int i = y1;i < y2;++i){
            res = min(res, rec(x1, y1, x2, i) + rec(x1, i + 1, x2, y2) + cnt);
        }
    }
    return table[x1][y1][x2][y2] = res;
}
int main()
{
    cin >> n >> m;
    chocolate.assign(n + 1, vector<int>(m + 1));
    pref.assign(n + 1, vector<int>(m + 1));
    for(int i = 1;i <= n;++i){
        for(int j = 1;j <= m;++j){
            cin >> chocolate[i][j];
            pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1] + chocolate[i][j];
        }
    }
    for(int i = 0;i < 51;++i){
        for(int j = 0;j < 51;++j){
            for(int k = 0;k < 51;++k){
                for(int l = 0;l < 51;++l){
                    table[i][j][k][l] = -1;
                }
            }
        }
    }
    cout << rec(1, 1, n, m);
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 26708 KB Output is correct
2 Correct 15 ms 26676 KB Output is correct
3 Correct 15 ms 26708 KB Output is correct
4 Correct 14 ms 26676 KB Output is correct
5 Correct 14 ms 26676 KB Output is correct
6 Correct 14 ms 26708 KB Output is correct
7 Correct 15 ms 26708 KB Output is correct
8 Correct 22 ms 26768 KB Output is correct
9 Correct 26 ms 26708 KB Output is correct
10 Correct 44 ms 26836 KB Output is correct
11 Correct 34 ms 26756 KB Output is correct
12 Correct 73 ms 26732 KB Output is correct
13 Correct 125 ms 26776 KB Output is correct
14 Correct 40 ms 26828 KB Output is correct
15 Correct 135 ms 26776 KB Output is correct
16 Correct 22 ms 26708 KB Output is correct
17 Correct 56 ms 26724 KB Output is correct
18 Correct 313 ms 26784 KB Output is correct
19 Correct 528 ms 26796 KB Output is correct
20 Correct 585 ms 26800 KB Output is correct