Submission #1791159

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Source Code Expand

#include<iostream>
using namespace std;
int main(){
	int N,A;
	long long int  K;
	long long int  Wa=0;
	long long int  ans; 
	int a[100000];
	int b[100000];
	int i,j;
	
	cin>>N>>K;
	
	for(i=0;i<N;i++){
		cin>>a[i]>>b[i];
	}
	for(i=0;i<N;i++){
		for(j=0;j<N-i-1;j++){
			if(a[j]>a[j+1]){
				A=a[j];
				a[j]=a[j+1];
				a[j+1]=A;
				A=b[j];
				b[j]=b[j+1];
				b[j+1]=A;
			}
		}
	}
	for(i=0;i<N;i++){
		Wa=Wa+b[i];
		if(K<=Wa){
			ans=a[i];
			break;
		}
	}
	
	cout<<ans<<endl;
	return 0;
}
			
			

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