Submission #659121

#	Time	Username	Problem	Language	Result	Execution time	Memory
659121		Kenpar	Exhibition (JOI19_ho_t2)	C++17	100 / 100	52 ms	4396 KiB

joi2019_ho_t2

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

#define ll long long
#define endl '\n'

const ll MOD = 1e9+7;
const ll INF = 1e16;
const ll MAX = 2 * 1e5;

void solve(){
	int n,m;

	cin>>n>>m;

	vector<pair<int,int>> photos(n);
	vector<int> frames(m);
	for(int i = 0; i < n; i++){
		int a,b; cin>>a>>b;

		photos[i] = {b,a};
	}

	sort(photos.begin(), photos.end());

	for(int i = 0; i < m; i++){
		cin>>frames[i];
	}

	sort(frames.begin(), frames.end());

	int ans = 0;
	while(!photos.empty() && !frames.empty()){
		if(photos[photos.size()-1].second <= frames[frames.size()-1]){
			ans++;
			photos.pop_back();
			frames.pop_back();
		}else{
			photos.pop_back();
		}
	}

	cout<<ans;
}


int main()
{
	cin.tie(NULL);
	ios::sync_with_stdio(NULL);
	int t = 1;

	//cin >> t;

	while(t--){
		//cout<<"Case #"<<t<<" > "<<endl;
		solve();

		cout<<endl;
	}
}

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50