Submission #3047698

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
vector<string>v;
string s;
int k;
int main(){
    cin>>s>>k;
    for(int i=1;i<=k;i++){
        for(int j=0;j<s.size()-i+1;j++){
            v.push_back(s.substr(j,i));
        }
    }
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
    cout<<v[k-1]<<endl;
    return 0;
}

Submission Info

Judge Result