Submission #824824

#	Time	Username	Problem	Language	Result	Execution time	Memory
824824		ElyesChaabouni	Examination (JOI19_examination)	C++14	0 / 100	29 ms	3248 KiB

examination

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
//#pragma GCC target ("avx2")
//#pragma GCC optimization ("O3")
//#pragma GCC optimization ("unroll-loops")
#define INV_2 499122177
#define INF 1000000000
#define PI 3.14159265358979323846
#define eps 1e-9
#define MOD1 998244353
#define MOD2 1000000007

using namespace std;

int main()
{
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n, m;
	cin >> n >> m;
	pair<int, int>a[n];
	for(int i = 0; i < n; i++)
		cin >> a[i].second >> a[i].first;
	int b[m];
	for(int i = 0; i < m; i++)
		cin >> b[i];
	sort(a, a+n);
	sort(b, b+m);
	int idx=m-1;
	int ans=0;
	for(int i = n-1; i >= 0; i--)
	{
		if(idx >= 0 && a[i].second <= b[idx])
		{
			idx--;
			ans++;
		}
	}
	cout << ans << '\n';
}
//07-02-46

• Subtask 1: 0 / 2
• Subtask 2: 0 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57