Submission #217183

#	Time	Username	Problem	Language	Result	Execution time	Memory
217183		kshitij_sodani	Exhibition (JOI19_ho_t2)	C++17	100 / 100	72 ms	5756 KiB

joi2019_ho_t2

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
typedef long long int llo;
#define mp make_pair
#define pb push_back
#define a first
#define b second
#define endl "\n"
llo mod=1000000007;
llo n,m;
pair<llo,llo> it[100002];
llo aa[100001];

llo check(llo mid){
	llo ind=m-1;
	llo tot=0;
	for(llo i=n-1;i>=0;i--){
		if(it[i].b<=aa[ind]){
			tot+=1;
			ind-=1;
		}
	}
	return tot>=mid;
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin>>n>>m;
	for(llo i=0;i<n;i++){
		cin>>it[i].b>>it[i].a;
	}
	for(llo i=0;i<m;i++){
		cin>>aa[i];
	}
	
	sort(it,it+n);
	sort(aa,aa+m);
	
	llo low=0;
	llo high=m;
	while(low<high-1){
		llo mid=(low+high)/2;
		if(check(mid)){
			low=mid;
		}
		else{
			high=mid-1;
		}
	}
	llo ans;
	for(llo i=high;i>=low;i--){
		if(check(i)){
			ans=i;
			break;
		}
	}
	cout<<ans<<endl;
	return 0;
}

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