#include <bits/stdc++.h>
using namespace std;
int main() {
  string a;
  string b;
  while(cin>>a>>b){
  	 if(a.length()>b.length()){
  	 	cout<<"no"<<endl;
	   }
	 string res=b+b;
	 int len=b.length();
	 if(res.find(a)!=-1){
	 	cout<<"yes"<<endl;
	 }else{
	 	cout<<"no"<<endl;
	 }
  	
  }

    return 0;
}