Submission #964510

#	Time	Username	Problem	Language	Result	Execution time	Memory
964510		starchan	Hotel (CEOI11_hot)	C++17	100 / 100	906 ms	63220 KiB

hot

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define in array<int, 2>
#define f first
#define s second
#define pb push_back
#define pob pop_back
#define INF (int)1e17
#define MX (int)3e5+5
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
signed main()
{
	fast();
	int n, m, k;
	cin >> n >> m >> k;
	vector<int> c(n+1);
	vector<int> p(n+1);
	set<int> work;
	for(int i = 1; i <= n; i++)
	{
		cin >> c[i] >> p[i];
		work.insert(i);
	}
	sort(c.begin()+1, c.end());
	sort(p.begin()+1, p.end());
	vector<in> d(m);
	for(int i = 0; i < m; i++)
		cin >> d[i][0] >> d[i][1];
	vector<int> cost;
	sort(d.rbegin(), d.rend());
	for(auto [v, sz]: d)
	{
		int t = lower_bound(p.begin(), p.end(), sz) - p.begin();
		auto it = work.lower_bound(t);
		if(it == work.end())
			continue;
		cost.pb(v - c[*it]);
		work.erase(it);
	}
	int ans = 0;
	sort(cost.rbegin(), cost.rend());
	for(int i = 0; i < k && i < cost.size(); i++)
	{
		if(cost[i] > 0)
			ans+=cost[i];
	}
	cout << ans << "\n";
	return 0;
}	

Compilation message (stderr)

hot.cpp: In function 'int main()':
hot.cpp:43:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for(int i = 0; i < k && i < cost.size(); i++)
      |                          ~~^~~~~~~~~~~~~

• 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