#include <bits/stdc++.h>
using namespace std;
int main() {
int N;
cin>>N;
string str;
cin >> str;
string temp=str;
vector<string> pq;
for(int i=0;i<N;i++){
temp=temp.substr(1)+temp[0];
pq.push_back(temp);
}
sort(pq.begin(),pq.end());
cout << pq[0] << '\n';
}
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