제출 #833333

#제출 시각아이디문제언어결과실행 시간메모리
833333tengiz05메기 농장 (IOI22_fish)C++17
6 / 100
259 ms40892 KiB
#include "fish.h"

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
    i64 s[N] {};
    map<pair<int, int>, int> f;
    for (int i = 0; i < M; i++) {
        s[X[i]] += W[i];
        f[{X[i], Y[i]}] = W[i];
    }
    if (N == 2) {
        return max(s[0], s[1]);
    }
    vector pre(2, vector<i64>(N + 1));
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < N; j++) {
            pre[i][j + 1] = pre[i][j] + f[{i, j}];
        }
    }
    i64 ans = 0;
    for (int i = 0; i <= N; i++) {
        ans = max(ans, pre[1][N] - pre[1][i] + pre[0][i]);
    }
    return ans;
}
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