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Submission #1057062

# Submission time Handle Problem Language Result Execution time Memory
1057062 2024-08-13T13:49:49 Z aykhn Catfish Farm (IOI22_fish) C++17
35 / 100
 1000 ms 713344 KB 
#include "fish.h"
#include <bits/stdc++.h>

using namespace std;

#define int long long

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(int32_t N, int32_t M, vector<int32_t> X, vector<int32_t> Y, vector<int32_t> 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 = 1; 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 1042 ms 511876 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 6488 KB Output is correct
2 Execution timed out 1064 ms 441656 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 1079 ms 367300 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 0 ms 6492 KB Output is correct
5 Correct 0 ms 6596 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 0 ms 6492 KB Output is correct
9 Correct 3 ms 22364 KB Output is correct
10 Correct 7 ms 40608 KB Output is correct
11 Correct 4 ms 22360 KB Output is correct
12 Correct 7 ms 40540 KB Output is correct
13 Correct 2 ms 13148 KB Output is correct
14 Correct 7 ms 40388 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 0 ms 6492 KB Output is correct
5 Correct 0 ms 6596 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 0 ms 6492 KB Output is correct
9 Correct 3 ms 22364 KB Output is correct
10 Correct 7 ms 40608 KB Output is correct
11 Correct 4 ms 22360 KB Output is correct
12 Correct 7 ms 40540 KB Output is correct
13 Correct 2 ms 13148 KB Output is correct
14 Correct 7 ms 40388 KB Output is correct
15 Correct 8 ms 40540 KB Output is correct
16 Correct 2 ms 13148 KB Output is correct
17 Correct 17 ms 41448 KB Output is correct
18 Correct 14 ms 41816 KB Output is correct
19 Correct 14 ms 41564 KB Output is correct
20 Correct 16 ms 41376 KB Output is correct
21 Correct 14 ms 41560 KB Output is correct
22 Correct 21 ms 42588 KB Output is correct
23 Correct 9 ms 40596 KB Output is correct
24 Correct 11 ms 41252 KB Output is correct
25 Correct 8 ms 40540 KB Output is correct
26 Correct 8 ms 40540 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 0 ms 6492 KB Output is correct
5 Correct 0 ms 6596 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 0 ms 6492 KB Output is correct
9 Correct 3 ms 22364 KB Output is correct
10 Correct 7 ms 40608 KB Output is correct
11 Correct 4 ms 22360 KB Output is correct
12 Correct 7 ms 40540 KB Output is correct
13 Correct 2 ms 13148 KB Output is correct
14 Correct 7 ms 40388 KB Output is correct
15 Correct 8 ms 40540 KB Output is correct
16 Correct 2 ms 13148 KB Output is correct
17 Correct 17 ms 41448 KB Output is correct
18 Correct 14 ms 41816 KB Output is correct
19 Correct 14 ms 41564 KB Output is correct
20 Correct 16 ms 41376 KB Output is correct
21 Correct 14 ms 41560 KB Output is correct
22 Correct 21 ms 42588 KB Output is correct
23 Correct 9 ms 40596 KB Output is correct
24 Correct 11 ms 41252 KB Output is correct
25 Correct 8 ms 40540 KB Output is correct
26 Correct 8 ms 40540 KB Output is correct
27 Correct 173 ms 706528 KB Output is correct
28 Correct 60 ms 128596 KB Output is correct
29 Correct 214 ms 700100 KB Output is correct
30 Incorrect 217 ms 713344 KB 1st lines differ - on the 1st token, expected: '102439236138254', found: '102426281544023'
31 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1079 ms 367300 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 1042 ms 511876 KB Time limit exceeded
2 Halted 0 ms 0 KB -