Submission #67928288

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Source Code Expand

#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
const int maxn = 2e5 + 5;
const long long p=998244353;
long long C[15][15];
vector<string> v;
string s[15];
int n,k,x;
void dfs(string now,int k)
{
    if (!k)
    {
        v.push_back(now);
        return;
    }
    for (int i=1;i<=n;i++)
        dfs(now+s[i],k-1);
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin>>n>>k>>x;
    string tmp;
    for (int i=1;i<=n;i++)
        cin>>s[i];
    dfs(tmp,k);
    sort(v.begin(),v.end());
    cout<<v[x-1];
}

Submission Info

Judge Result