oj.uz

답안 #1083833

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083833 2024-09-04T08:43:09 Z SamueleVid 메기 농장 (IOI22_fish) C++17
9 / 100
 62 ms 17488 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];
    }

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

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

    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);
    }

    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[1][i + 1];
        dp[0][i] = max(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[1][i + 1];
            dp[1][i] = max(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:90:10: warning: unused variable 'y_zero' [-Wunused-variable]
   90 |     bool y_zero = 1;
      |          ^~~~~~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 4432 KB Output is correct
2 Correct 21 ms 5564 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 58 ms 17112 KB Output is correct
6 Correct 62 ms 17488 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 32 ms 11028 KB Output is correct
3 Correct 43 ms 13132 KB Output is correct
4 Correct 18 ms 4444 KB Output is correct
5 Correct 25 ms 5664 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 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 16 ms 6744 KB Output is correct
13 Correct 20 ms 7964 KB Output is correct
14 Correct 17 ms 6636 KB Output is correct
15 Correct 19 ms 7356 KB Output is correct
16 Correct 18 ms 6636 KB Output is correct
17 Correct 20 ms 7372 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 12 ms 5276 KB Output is correct
4 Correct 10 ms 4576 KB Output is correct
5 Incorrect 19 ms 7772 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
6 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 12 ms 5276 KB Output is correct
4 Correct 10 ms 4576 KB Output is correct
5 Incorrect 19 ms 7772 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
6 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 4432 KB Output is correct
2 Correct 21 ms 5564 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 58 ms 17112 KB Output is correct
6 Correct 62 ms 17488 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 32 ms 11028 KB Output is correct
9 Correct 43 ms 13132 KB Output is correct
10 Correct 18 ms 4444 KB Output is correct
11 Correct 25 ms 5664 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 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 16 ms 6744 KB Output is correct
19 Correct 20 ms 7964 KB Output is correct
20 Correct 17 ms 6636 KB Output is correct
21 Correct 19 ms 7356 KB Output is correct
22 Correct 18 ms 6636 KB Output is correct
23 Correct 20 ms 7372 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 12 ms 5276 KB Output is correct
27 Correct 10 ms 4576 KB Output is correct
28 Incorrect 19 ms 7772 KB 1st lines differ - on the 1st token, expected: '1673106170551', found: '1673122841934'
29 Halted 0 ms 0 KB -