제출 #951966

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
951966		GrandTiger1729	Cake 3 (JOI19_cake3)	C++17	0 / 100	1 ms	600 KiB

cake3

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

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n, K;
    cin >> n >> K;
    vector<pair<int, int>> a(n);
    for (int i = 0; i < n; i++)
    {
        cin >> a[i].second >> a[i].first;
    }
    sort(a.begin(), a.end());
    long long ans = 0;
    for (int i = 0; i < n; i++)
    {
        long long cur = 0;
        priority_queue<int, vector<int>, greater<>> pq;
        for (int j = i + 1; j < n; j++)
        {
            while (pq.size() > K - 2)
            {
                cur -= pq.top();
                pq.pop();
            }
            if (pq.size() == K - 2)
            {
                ans = max(ans, cur + a[i].second + a[j].second - 2ll * (a[j].first - a[i].first));
            }
            pq.push(a[j].second);
            cur += a[j].second;
        }
    }
    cout << ans << '\n';
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

cake3.cpp: In function 'int main()':
cake3.cpp:22:30: warning: comparison of integer expressions of different signedness: 'std::priority_queue<int, std::vector<int>, std::greater<void> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |             while (pq.size() > K - 2)
      |                    ~~~~~~~~~~^~~~~~~
cake3.cpp:27:27: warning: comparison of integer expressions of different signedness: 'std::priority_queue<int, std::vector<int>, std::greater<void> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |             if (pq.size() == K - 2)
      |                 ~~~~~~~~~~^~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 19
• Subtask 3: 0 / 76