oj.uz

Submission #728804

# Submission time Handle Problem Language Result Execution time Memory
728804 2023-04-23T06:46:17 Z kwongweng Catfish Farm (IOI22_fish) C++17
52 / 100
 811 ms 2097152 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long double ld;
typedef pair<ll, ll> pll;
#define FOR(i, a, b) for(int i = a; i < b; i++)
#define ROF(i, a, b) for(int i = a; i >= b; i--)
#define ms memset
#define pb push_back
#define fi first
#define se second

// O(n^2) dp

ll max_weights(int n, int m, vi X, vi Y, vi W){
  ll mat[n][n]; //position of all fishes
  ms(mat, 0, sizeof(mat));
  FOR(i,0,m){
    mat[X[i]][Y[i]] = W[i];
  }
  ll dp[n][n][2];
  // dp[i][j][0] - mat[i][j] chosen, while increasing
  // dp[i][j][1] - while decreasing
  ms(dp,0,sizeof(dp));
  FOR(i,0,n){
    //decreasing
    if (i > 0){
      FOR(k,0,i-1){
        dp[i][n-1][1] = max(dp[i][n-1][1], dp[k][n-1][0]);
        dp[i][n-1][1] = max(dp[i][n-1][1], dp[k][0][1]);
      }
      dp[i][n-1][1] += mat[i][n-1];
      ROF(j,n-2,0){
        dp[i][j][1] = max(dp[i][j][1], dp[i][j+1][1]);
        dp[i][j][1] = max(dp[i][j][1], dp[i-1][j+1][1]);
        dp[i][j][1] += mat[i][j];
      }
    }
    if (i < n-1){
      //increasing
      if (i>1) dp[i][0][0] = max(dp[i][0][0], dp[i-1][0][1]);
      if (i>2) dp[i][0][0] = max(dp[i][0][0], dp[i-2][n-1][0]);
      dp[i][0][0] += mat[i][0];
      FOR(j,1,n){
        dp[i][j][0] = max(dp[i][j][0], dp[i][j-1][0]);
        if (i>0){
          dp[i][j][0] = max(dp[i][j][0], dp[i-1][j-1][0]);
        }
        dp[i][j][0] += mat[i][j];
      }
    }
  }
  ll ans = 0;
  FOR(i,0,n){
    FOR(j,0,n){
      ans = max(ans, max(dp[i][j][0], dp[i][j][1]));
    }
  }
  
  if (n > 2){
    ll val = 0;
    FOR(i,0,n){
      val += mat[n-1][i];
    }
    ans = max(ans, dp[n-3][0][1] + val);
  }
  return ans;
}

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 777 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Runtime error 811 ms 2097152 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 757 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 3 ms 2388 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 2 ms 2388 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 2360 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 3 ms 2388 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 2 ms 2388 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 2360 KB Output is correct
15 Correct 2 ms 2388 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 16 ms 4160 KB Output is correct
18 Correct 16 ms 4148 KB Output is correct
19 Correct 14 ms 4176 KB Output is correct
20 Correct 14 ms 4132 KB Output is correct
21 Correct 15 ms 4180 KB Output is correct
22 Correct 26 ms 5940 KB Output is correct
23 Correct 5 ms 2636 KB Output is correct
24 Correct 12 ms 3540 KB Output is correct
25 Correct 2 ms 2388 KB Output is correct
26 Correct 5 ms 2644 KB Output is correct

Subtask #6
17.0 / 17.0

# 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 3 ms 2388 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 2 ms 2388 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 2360 KB Output is correct
15 Correct 2 ms 2388 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 16 ms 4160 KB Output is correct
18 Correct 16 ms 4148 KB Output is correct
19 Correct 14 ms 4176 KB Output is correct
20 Correct 14 ms 4132 KB Output is correct
21 Correct 15 ms 4180 KB Output is correct
22 Correct 26 ms 5940 KB Output is correct
23 Correct 5 ms 2636 KB Output is correct
24 Correct 12 ms 3540 KB Output is correct
25 Correct 2 ms 2388 KB Output is correct
26 Correct 5 ms 2644 KB Output is correct
27 Correct 215 ms 211736 KB Output is correct
28 Correct 69 ms 22328 KB Output is correct
29 Correct 280 ms 224196 KB Output is correct
30 Correct 333 ms 224308 KB Output is correct
31 Correct 284 ms 224224 KB Output is correct
32 Correct 85 ms 19424 KB Output is correct
33 Correct 296 ms 224344 KB Output is correct
34 Correct 298 ms 224316 KB Output is correct
35 Correct 233 ms 216436 KB Output is correct
36 Correct 281 ms 224244 KB Output is correct

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 757 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 777 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -