Problem:
Score : 200 points

Problem Statement

You are given string S and T consisting of lowercase English letters.

Determine if S equals T after rotation.

That is, determine if S equals T after the following operation is performed some number of times:

Operation: Let S = S_1 S_2 ... S_{|S|}. Change S to S_{|S|} S_1 S_2 ... S_{|S|-1}.

Here, |X| denotes the length of the string X.

Constraints

2 \leq |S| \leq 100

|S| = |T|

S and T consist of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S
T

Output

If S equals T after rotation, print Yes; if it does not, print No.

Sample Input 1

kyoto
tokyo

Sample Output 1

Yes

In the first operation, kyoto becomes okyot.

In the second operation, okyot becomes tokyo.

Sample Input 2

abc
arc

Sample Output 2

No

abc does not equal arc after any number of operations.

Sample Input 3

aaaaaaaaaaaaaaab
aaaaaaaaaaaaaaab

Sample Output 3

Yes

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
using namespace std;

int main() {
  string s,t,ss;
  cin >> s >> t;
  ss = s;
  for(int i = 1;i < s.size()+1;i++){
    if(i%2 == 1){
      for(int j = 0;j < s.size()-1;j++){
        ss.at(j+1) = s.at(j);
      }
      ss.at(0) = s.at(s.size()-1);
      if(ss == t){
        cout << "Yes" << endl;
        goto end;
      }
    }
    else{
      for(int j = 0;j < s.size()-1;j++){
        s.at(j+1) = ss.at(j);
      }
      s.at(0) = ss.at(s.size()-1);
      if(s == t){
        cout << "Yes" << endl;
        goto end;
      }
    }
  }
  cout << "No" << endl;
  end:;
}