Submission #432329

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Source Code Expand

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <deque>
#include <list>
using namespace std;
#define REP(i,n) for(int i = 0; i < (int)n; i++)

int main(void)
{
    string s; cin>>s;
    int n; cin>>n;
    vector<string> v;
    REP(i, s.size()) {
        REP(j, s.size()) {
            string t = "";
            t += s[i];
            t += s[j];
            v.push_back(t);
        }
    }
    sort(v.begin(), v.end());
    cout << v[n-1] << endl;
    return 0;
}

Submission Info

Judge Result