Submission #129365

#	Time	Username	Problem	Language	Result	Execution time	Memory
129365		tuanasanh	Exhibition (JOI19_ho_t2)	C++11	100 / 100	70 ms	5120 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#define ii pair<int,int> 
using namespace std;
int n,m,v,s;
vector<ii> r;
vector<int> c;
signed main(){
//	freopen(".inp","r",stdin);
//	freopen(".out","w",stdout);
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin>>n>>m;
	for(int i=0;i<n;i++){
		cin>>s>>v;
		r.push_back({v,s});
	}
	for(int i=0;i<m;i++){
		cin>>s;
		c.push_back(s);
	}
	sort(r.begin(),r.end());
	sort(c.begin(),c.end());
	int lst=m-1;
	for(int i=n-1;i>=0;i--){
		if(r[i].second<=c[lst]) lst--;
		if(lst<0) break;
	}
	cout<<m-lst-1;
}

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