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Submission #231687

# Submission time Handle Problem Language Result Execution time Memory
231687 2020-05-14T12:47:24 Z AlexLuchianov Raisins (IOI09_raisins) C++14
100 / 100
 244 ms 26464 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>

using namespace std;

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 50;
ll const inf = 1000000000000000000;
ll dp[1 + nmax][1 + nmax][1 + nmax][1 + nmax];
int v[1 + nmax][1 + nmax], sum[1 + nmax][1 + nmax];

int getsum(int x, int y, int x2, int y2){
  return sum[x2][y2] - sum[x - 1][y2] - sum[x2][y - 1] + sum[x - 1][y - 1];
}

int main()
{
  int n, m;
  cin >> n >> m;
  for(int i = 1;i <= n; i++)
    for(int j = 1;j <= m; j++) {
      cin >> v[i][j];
      sum[i][j] = sum[i - 1][j] + sum[i][j - 1] - sum[i - 1][j - 1] + v[i][j];
    }

  for(int dif = 0; dif < n; dif++)
    for(int i = 1; i <= n - dif; i++)
      for(int dif2 = 0; dif2 < m; dif2++)
        for(int i2 = 1; i2 <= m - dif2; i2++){
          int j = i + dif;
          int j2 = i2 + dif2;
          dp[i][j][i2][j2] = inf;
          if(i == j && i2 == j2) {
            dp[i][j][i2][j2] = 0;
            continue;
          }
          ll basic = getsum(i, i2, j, j2);

          for(int k = i; k < j; k++)
            dp[i][j][i2][j2] = min(dp[i][j][i2][j2], dp[i][k][i2][j2] + dp[k + 1][j][i2][j2] + basic);
          for(int k = i2; k < j2; k++)
            dp[i][j][i2][j2] = min(dp[i][j][i2][j2], dp[i][j][i2][k] + dp[i][j][k + 1][j2] + basic);
        }
  cout << dp[1][n][1][m];
  return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 768 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 7 ms 2560 KB Output is correct
9 Correct 9 ms 4096 KB Output is correct
10 Correct 10 ms 4864 KB Output is correct
11 Correct 9 ms 3584 KB Output is correct
12 Correct 20 ms 8960 KB Output is correct
13 Correct 32 ms 11648 KB Output is correct
14 Correct 15 ms 4480 KB Output is correct
15 Correct 35 ms 13176 KB Output is correct
16 Correct 9 ms 6784 KB Output is correct
17 Correct 22 ms 11520 KB Output is correct
18 Correct 136 ms 23300 KB Output is correct
19 Correct 206 ms 24568 KB Output is correct
20 Correct 244 ms 26464 KB Output is correct