Submission #910616

#	Time	Username	Problem	Language	Result	Execution time	Memory
910616		GrandTiger1729	Hotel (CEOI11_hot)	C++17	100 / 100	343 ms	29700 KiB

hot

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

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

Compilation message (stderr)

hot.cpp: In function 'int main()':
hot.cpp:34:27: 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]
   34 |         while (res.size() > K)
      |                ~~~~~~~~~~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10