Submission #432315

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<string>
#include<cstring>
#include<vector>
#include<set>
#include<list>
#include<queue>
#include<cmath>
#include<functional>
#include<algorithm>
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;


int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	string s;
	int n;
	cin>>s>>n;
	vector<string> v;
	rep(i,s.size())rep(j,s.size())v.push_back(string()+s[i]+s[j]);
	sort(v.begin(),v.end());
	cout<<v[n-1]<<endl;

	return 0;
}

Submission Info

Judge Result