oj.uz

Submission #1083809

# Submission time Handle Problem Language Result Execution time Memory
1083809 2024-09-04T07:55:29 Z SamueleVid Catfish Farm (IOI22_fish) C++17
9 / 100
 65 ms 14424 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<int> grid(N + 5);
    for (int i = 0; i < M; i ++) grid[X[i]] = W[i];

    for (int i = N - 1; 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) continue;
        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]); 
    }

    return dp[0][0];
}


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:96:10: warning: unused variable 'y_zero' [-Wunused-variable]
   96 |     bool y_zero = 1;
      |          ^~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 4176 KB Output is correct
2 Correct 18 ms 4956 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 65 ms 14092 KB Output is correct
6 Correct 62 ms 14424 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 32 ms 9584 KB Output is correct
3 Correct 41 ms 11768 KB Output is correct
4 Correct 15 ms 4188 KB Output is correct
5 Correct 20 ms 4952 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 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 16 ms 6232 KB Output is correct
13 Correct 21 ms 7252 KB Output is correct
14 Correct 17 ms 6224 KB Output is correct
15 Correct 27 ms 7004 KB Output is correct
16 Correct 17 ms 6236 KB Output is correct
17 Correct 20 ms 6780 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Incorrect 11 ms 5208 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21261432585312'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 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 344 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 344 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 344 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Incorrect 11 ms 5208 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21261432585312'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 4176 KB Output is correct
2 Correct 18 ms 4956 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 65 ms 14092 KB Output is correct
6 Correct 62 ms 14424 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 32 ms 9584 KB Output is correct
9 Correct 41 ms 11768 KB Output is correct
10 Correct 15 ms 4188 KB Output is correct
11 Correct 20 ms 4952 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 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 16 ms 6232 KB Output is correct
19 Correct 21 ms 7252 KB Output is correct
20 Correct 17 ms 6224 KB Output is correct
21 Correct 27 ms 7004 KB Output is correct
22 Correct 17 ms 6236 KB Output is correct
23 Correct 20 ms 6780 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Incorrect 11 ms 5208 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21261432585312'
27 Halted 0 ms 0 KB -