Submission #538110

#	Time	Username	Problem	Language	Result	Execution time	Memory
538110		thegrimbee	Exhibition (JOI19_ho_t2)	C++14	100 / 100	68 ms	5600 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
using namespace std;
#define int long long
bool debug = false;
int mod = 1e9+7;
signed main(){
	cin.tie(0);
	ios_base::sync_with_stdio(0);
	int n, m; cin >> n >> m;
	vector<pair<int, int>> pics(n);
	vector<int> frames(m);
	for (int i = 0; i < n; ++i){
		cin >> pics[i].second >> pics[i].first;
	}
	for (int i = 0; i < m; ++i){
		cin >> frames[i];
	}
	sort(frames.begin(), frames.end());
	sort(pics.begin(), pics.end());
	int lo = 0, hi = min(n, m)+1, mid = (lo + hi)/2, count, temp;
	bool found = false;
	while (lo < hi - 1){
		if(debug)cout << mid << '\n';
		count = 0;
		temp = 0;
		found = false;
		for (int i = 0; i < n; ++i){
			if (pics[i].first >= temp && pics[i].second <= frames[m-mid+count]){
				temp = pics[i].first;
				count++;
			}
			if (count == mid){
				found = true;
				lo = mid;
				mid = (lo + hi)/2;
				break;
			}
		}
		if (!found){
			hi = mid;
			mid = (lo + hi)/2;
		}
	}
	cout << lo;

}

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