oj.uz

Submission #627278

# Submission time Handle Problem Language Result Execution time Memory
627278 2022-08-12T11:46:20 Z typ_ik Catfish Farm (IOI22_fish) C++17
12 / 100
 95 ms 9932 KB 
#include <bits/stdc++.h>

#define all(x) (x).begin(), (x).end()

using namespace std;

long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    int block1 = 0;
    for (auto c : X) block1 += (c & 1 ^ 1);
    if (block1 == M)
        return accumulate(all(W), 0ll);

    int mx = -1;
    for (auto c : X) mx = max(mx, c);

    if (mx <= 1) {
        vector <long long> col[2];
        for (auto i : {0, 1})
            col[i].resize(N);

        for (int i = 0; i < M; i++)
            col[X[i]][Y[i]] += W[i];

        for (int i = 0; i < 2; i++)
            for (int j = 1; j < N; j++)
                col[i][j] += col[i][j-1];

        long long ans = col[1][N - 1];
        for (int i = 0; i < N; i++)
            ans = max(ans, col[0][i] + (col[1][N - 1] - col[1][i]));

        return ans;
    }

    long long dp[N + 1][2];
    long long val[N + 1];
    for (int i = 0; i <= N; i++) {
        for (int j : {0, 1})
            dp[i][j] = 0;
        val[i] = 0;
    }

    for (int i = 0; i < M; i++)
        X[i]++;
    for (int i = 0; i < M; i++)
        val[X[i]] = W[i];

    dp[0][1] = val[1];

    for (int i = 2; i <= N; i++) {
        dp[i][0] = max(dp[i - 1][0], dp[i - 1][1]);
        dp[i][1] = max(dp[i - 1][1] - val[i], max(dp[i - 2][0] + val[i - 1], dp[i - 2][1])) + val[i + 1];
    }

    return max(dp[N - 1][0], dp[N - 1][1]);
}

//main() {
//    int N = 10, M = 4;
//    vector <int> X = {0, 5, 7, 4};
//    vector <int> Y = {0, 0, 0, 0};
//    vector <int> W = {10, 5, 3, 6};
//    cout << max_weights(N, M, X, Y, W) << '\n';
//}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:9:35: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
    9 |     for (auto c : X) block1 += (c & 1 ^ 1);
      |                                 ~~^~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2132 KB Output is correct
2 Correct 34 ms 4268 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 91 ms 9196 KB Output is correct
6 Correct 95 ms 9224 KB Output is correct

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 47 ms 5396 KB Output is correct
3 Correct 74 ms 9932 KB Output is correct
4 Correct 26 ms 3540 KB Output is correct
5 Correct 42 ms 4268 KB Output is correct
6 Incorrect 1 ms 340 KB 1st lines differ - on the 1st token, expected: '4044', found: '6066'
7 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 18 ms 4536 KB Output is correct
4 Correct 16 ms 3796 KB Output is correct
5 Correct 41 ms 5084 KB Output is correct
6 Correct 26 ms 5928 KB Output is correct
7 Correct 41 ms 6456 KB Output is correct
8 Correct 29 ms 6428 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 18 ms 4536 KB Output is correct
4 Correct 16 ms 3796 KB Output is correct
5 Correct 41 ms 5084 KB Output is correct
6 Correct 26 ms 5928 KB Output is correct
7 Correct 41 ms 6456 KB Output is correct
8 Correct 29 ms 6428 KB Output is correct
9 Incorrect 28 ms 5832 KB 1st lines differ - on the 1st token, expected: '99999', found: '66666'
10 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2132 KB Output is correct
2 Correct 34 ms 4268 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 91 ms 9196 KB Output is correct
6 Correct 95 ms 9224 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 47 ms 5396 KB Output is correct
9 Correct 74 ms 9932 KB Output is correct
10 Correct 26 ms 3540 KB Output is correct
11 Correct 42 ms 4268 KB Output is correct
12 Incorrect 1 ms 340 KB 1st lines differ - on the 1st token, expected: '4044', found: '6066'
13 Halted 0 ms 0 KB -