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Submission #1056798

# Submission time Handle Problem Language Result Execution time Memory
1056798 2024-08-13T11:20:56 Z aykhn Catfish Farm (IOI22_fish) C++17
35 / 100
 1000 ms 579836 KB 
#include "fish.h"
#include <bits/stdc++.h>

using namespace std;

const int MXN = 3e3 + 5;

long long dp[2][MXN][MXN], val[MXN][MXN];
long long lft[MXN][MXN], rig[MXN][MXN], in[MXN][MXN];
long long pre[2][MXN][MXN], suf[2][MXN][MXN];
long long mx[MXN];

/*
0 = len[i] < len[i + 1];
1 = len[i] > len[i + 1];
*/
long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) 
{
    for (int i = 0; i < M; i++) val[X[i] + 1][Y[i] + 1] = 1LL * W[i];
    for (int i = 1; i <= N; i++) 
    {
        for (int j = 1; j <= N; j++)
        {
            lft[i][j] = lft[i][j - 1] + val[i - 1][j];
            rig[i][j] = rig[i][j - 1] + val[i + 1][j];
            in[i][j] = in[i][j - 1] + val[i][j];
        }
    }
    for (int i = 1; i <= N; i++)
    {
        for (int j = 0; j <= N; j++)
        {
            dp[0][i][j] = dp[1][i][j] = lft[i][j] + rig[i][j];
            if (i <= 1) continue;
            dp[0][i][j] = max(dp[0][i][j], pre[0][i - 1][j] + (lft[i][j] + rig[i][j]));
            dp[1][i][j] = max(dp[1][i][j], suf[0][i - 1][j] + (rig[i][j] - in[i][j]));
            for (int k = 1; k <= N; k++)
            {
                if (k <= j)
                {
                    long long res = (dp[0][i - 1][k] - rig[i - 1][k] - in[i - 1][k]) + (lft[i][j] + rig[i][j]);
                    dp[0][i][j] = max(dp[0][i][j], res);
                }
                if (k >= j)
                {
                    long long res = (dp[1][i - 1][k]) + (rig[i][j] - in[i][j]);
                    dp[1][i][j] = max(dp[1][i][j], res);
                }
            }
            if (i <= 2) continue;
            long long A = pre[1][i - 2][j] + lft[i][j] + rig[i][j];
            long long B = suf[1][i - 2][j] + rig[i][j];
            dp[0][i][j] = max({dp[0][i][j], A, B});
            dp[1][i][j] = max({dp[1][i][j], A, B});
            // for (int k = 1; k <= N; k++)
            // {
            //     long long res = 0;
            //     if (k <= j) 
            //     {
            //         res = (max(dp[0][i - 2][k], dp[1][i - 2][k]) - rig[i - 2][k]) + lft[i][j] + rig[i][j];
            //     }
            //   	if (k >= j)
            //     {
            //         res = max(dp[0][i - 2][k], dp[1][i - 2][k]) + rig[i][j];
            //     }
            //     dp[0][i][j] = max(dp[0][i][j], res);
            //     dp[1][i][j] = max(dp[1][i][j], res);
            // }
            if (i <= 3) continue;
            dp[0][i][j] = max(dp[0][i][j], mx[i - 3] + lft[i][j] + rig[i][j]);
            dp[1][i][j] = max(dp[1][i][j], mx[i - 3] + lft[i][j] + rig[i][j]);
        }
        for (int j = 1; j <= N; j++) 
        {
            pre[0][i][j] = max(pre[0][i][j - 1], dp[0][i][j] - rig[i][j] - in[i][j]);
            pre[1][i][j] = max(pre[1][i][j - 1], max(dp[0][i][j], dp[1][i][j]) - rig[i][j]);
        }
        for (int j = N; j >= 1; j--)
        {
            suf[0][i][j] = max(suf[0][i][j + 1], dp[1][i][j]);
            suf[1][i][j] = max(suf[1][i][j + 1], max(dp[0][i][j], dp[1][i][j]));
        }
        for (int j = 1; j <= N; j++)
        {
            dp[1][i][j] = max(dp[1][i][j], dp[0][i][j]);
            mx[i] = max({mx[i], dp[0][i][j], dp[1][i][j]});
        }
    }
    long long ans = 0;
    for (int i = 1; i <= N; i++) 
    {
        for (int j = 1; j <= N; j++) 
        {
            ans = max({ans, dp[0][i][j], dp[1][i][j]});
        }
    }
    return ans;
}

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 579836 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Execution timed out 1108 ms 486108 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1018 ms 346964 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 8796 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 6 ms 22364 KB Output is correct
10 Correct 28 ms 40604 KB Output is correct
11 Correct 6 ms 22360 KB Output is correct
12 Correct 28 ms 40404 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 27 ms 40536 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 8796 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 6 ms 22364 KB Output is correct
10 Correct 28 ms 40604 KB Output is correct
11 Correct 6 ms 22360 KB Output is correct
12 Correct 28 ms 40404 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 27 ms 40536 KB Output is correct
15 Correct 27 ms 40532 KB Output is correct
16 Correct 2 ms 13148 KB Output is correct
17 Correct 33 ms 41556 KB Output is correct
18 Correct 33 ms 41480 KB Output is correct
19 Correct 33 ms 41556 KB Output is correct
20 Correct 34 ms 41564 KB Output is correct
21 Correct 33 ms 41556 KB Output is correct
22 Correct 44 ms 42580 KB Output is correct
23 Correct 28 ms 40540 KB Output is correct
24 Correct 31 ms 41064 KB Output is correct
25 Correct 28 ms 40532 KB Output is correct
26 Correct 28 ms 40744 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 8796 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 6 ms 22364 KB Output is correct
10 Correct 28 ms 40604 KB Output is correct
11 Correct 6 ms 22360 KB Output is correct
12 Correct 28 ms 40404 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 27 ms 40536 KB Output is correct
15 Correct 27 ms 40532 KB Output is correct
16 Correct 2 ms 13148 KB Output is correct
17 Correct 33 ms 41556 KB Output is correct
18 Correct 33 ms 41480 KB Output is correct
19 Correct 33 ms 41556 KB Output is correct
20 Correct 34 ms 41564 KB Output is correct
21 Correct 33 ms 41556 KB Output is correct
22 Correct 44 ms 42580 KB Output is correct
23 Correct 28 ms 40540 KB Output is correct
24 Correct 31 ms 41064 KB Output is correct
25 Correct 28 ms 40532 KB Output is correct
26 Correct 28 ms 40744 KB Output is correct
27 Execution timed out 1061 ms 311876 KB Time limit exceeded
28 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1018 ms 346964 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 579836 KB Time limit exceeded
2 Halted 0 ms 0 KB -