Submission #2495081

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

string s;

int k;

int main()
{
    ios_base :: sync_with_stdio(false);
    cin.tie(NULL);

    cin >> s >> k;

    vector <string> v;

    for(int i = 0; i < s.size(); ++i)
    {
        string a;
        for(int j = i; j < s.size(); ++j)
        {
            a.push_back(s[j]);
            v.push_back(a);
            if(a.size() == 5)
                break;
        }
    }

    sort(v.begin(), v.end());
    v.resize(unique(v.begin(), v.end()) - v.begin());

    cout << v[k - 1] << '\n';

    return 0;
}

Submission Info

Judge Result