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# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Linq;
using System.Collections.Generic;

namespace _0030
{
    
    class Program
    {

        
        static void Main(string[] args)
        {
            string a = Console.ReadLine();
            string b = Console.ReadLine();
            

            //そもそも始めから一致してたらYes
            if(a == b)
            {
                Console.WriteLine("Yes");
                return;
            }

            //文字列の長さが違ったら一致しようがない
            if(a.Length != b.Length)
            {
                Console.WriteLine("No");
                return;
            }

            string substr;
            string sn;
            string strnow = a;
           
            int n = a.Length;
            
            //aの回転作業に入る
            for (int i = 0; i < n; i++)
            {
                substr = strnow.Substring(0, n - 1);
                sn = strnow[n - 1].ToString();
                strnow = sn + substr;

                if(strnow == b)
                {
                    Console.WriteLine("Yes");
                    return;
                }
            }

            Console.WriteLine("No");
 
       
        }
    }
}