oj.uz

Submission #1083813

# Submission time Handle Problem Language Result Execution time Memory
1083813 2024-09-04T07:59:35 Z SamueleVid Catfish Farm (IOI22_fish) C++17
9 / 100
 59 ms 17492 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long

constexpr int MAXN = 1e5 + 5;

ll sum_tutto(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    ll sum = 0;
    for (auto x : W) sum += x;
    return sum;
}

ll res_minore_di_due(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    if (N == 2) {
        // massimo tra 0 e 1    
        ll one = 0;
        ll zero = 0;
        for (int i = 0; i < M; i ++) {
            if (X[i] == 0) zero += W[i];
            else one += W[i];
        }

        return max(one, zero);
    }

    // altrimenti piazza una riga in 2 e poi prendi prefisso maggiore piazzando in 1
    
    ll sum = 0;
    for (int i = 0; i < M; i ++) {
        if (X[i] == 1) sum += W[i];
    }



    // cout << "sum : " << sum << '\n';

    vector<vector<ll>> pos(2, vector<ll>(N + 5, 0));

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

    // for (int i = 0; i < N + 5; i ++) {
    //     cout << pos[0][i] << " ";
    // }
    // cout << '\n';
    // for (int i = 0; i < N + 5; i ++) {
    //     cout << pos[1][i] << " ";
    // }
    // cout << '\n';

    ll best_res = sum;

    ll sum_zero = 0;
    ll sum_uno = 0;
    for (int i = 0; i < N + 5; i ++) {
        sum_zero += pos[0][i];
        sum_uno += pos[1][i];
        best_res = max(best_res, sum - sum_uno + sum_zero);
        // cout << "per i : " << i << " avremmo " << sum - sum_uno + sum_zero << '\n';
    }

    return best_res;
}

ll res_y_zero(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    vector<vector<ll>> dp(2, vector<ll>(N + 5)); // posso prendere a sx o no, posizione

    vector<ll> grid(N + 5);
    for (int i = 0; i < M; i ++) grid[X[i]] = W[i];

    for (int i = N; i >= 0; i --) {
        dp[0][i] = dp[0][i + 1];
        dp[0][i] = max(dp[0][i], dp[0][i + 2] + grid[i + 1]);
        dp[0][i] = max(dp[0][i], dp[1][i + 3] + grid[i + 1]);

        if (i != 0) {
            dp[1][i] = dp[0][i + 1] + grid[i - 1];
            dp[1][i] = max(dp[1][i],  grid[i - 1] + dp[0][i + 2] + grid[i + 1]); 
            dp[1][i] = max(dp[1][i],  grid[i - 1] + dp[1][i + 3] + grid[i + 1]); 
        }
    }

    ll best_res = 0;
    for (int i = 0; i <= N; i ++) {
        best_res = max(best_res, dp[0][i]);
        best_res = max(best_res, dp[1][i]);
    }
    return best_res;
}


ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    bool all_even = 1;
    for (auto x : X) if (x % 2) all_even = 0;
    if (all_even) return sum_tutto(N, M, X, Y, W);

    bool minore_di_due = 1;
    for (auto x : X) if (x >= 2) minore_di_due = 0;
    if (minore_di_due) return res_minore_di_due(N, M, X, Y, W);

    bool y_zero = 1;
    for (auto y : Y) if (y >= 0) minore_di_due = 0;
    return res_y_zero(N, M, X, Y, W);
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:102:10: warning: unused variable 'y_zero' [-Wunused-variable]
  102 |     bool y_zero = 1;
      |          ^~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 4444 KB Output is correct
2 Correct 17 ms 5568 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 55 ms 17240 KB Output is correct
6 Correct 59 ms 17492 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 31 ms 11036 KB Output is correct
3 Correct 42 ms 13136 KB Output is correct
4 Correct 16 ms 4444 KB Output is correct
5 Correct 19 ms 5568 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 15 ms 6748 KB Output is correct
13 Correct 19 ms 8028 KB Output is correct
14 Correct 16 ms 6640 KB Output is correct
15 Correct 21 ms 7508 KB Output is correct
16 Correct 20 ms 6736 KB Output is correct
17 Correct 18 ms 7508 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 11 ms 5276 KB Output is correct
4 Correct 9 ms 4700 KB Output is correct
5 Incorrect 20 ms 7808 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
6 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 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 348 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 348 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 1 ms 348 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 11 ms 5276 KB Output is correct
4 Correct 9 ms 4700 KB Output is correct
5 Incorrect 20 ms 7808 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
6 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 4444 KB Output is correct
2 Correct 17 ms 5568 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 55 ms 17240 KB Output is correct
6 Correct 59 ms 17492 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 31 ms 11036 KB Output is correct
9 Correct 42 ms 13136 KB Output is correct
10 Correct 16 ms 4444 KB Output is correct
11 Correct 19 ms 5568 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 15 ms 6748 KB Output is correct
19 Correct 19 ms 8028 KB Output is correct
20 Correct 16 ms 6640 KB Output is correct
21 Correct 21 ms 7508 KB Output is correct
22 Correct 20 ms 6736 KB Output is correct
23 Correct 18 ms 7508 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 11 ms 5276 KB Output is correct
27 Correct 9 ms 4700 KB Output is correct
28 Incorrect 20 ms 7808 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
29 Halted 0 ms 0 KB -