Problem:
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Ring

Write a program which finds a pattern $p$ in a ring shaped text $s$.

Input

In the first line, the text $s$ is given.

In the second line, the pattern $p$ is given.

Output

If $p$ is in $s$, print Yes in a line, otherwise No.

Constraints

$1 \leq $ length of $p \leq $ length of $s \leq 100$

$s$ and $p$ consists of lower-case letters

Sample Input 1

vanceknowledgetoad
advance

Sample Output 1

Yes

Sample Input 2

vanceknowledgetoad
advanced

Sample Output 2

No

Solution in C# (judge verdict: Wrong Answer)

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

namespace ConsoleApplication14
{
    //ONLINE JUDGE (ITP1_8_D)

    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            string p = Console.ReadLine();

            bool bl = false;
            string str1 = string.Concat(s, s);      //??????????????£????????????
            string str2 = ""; 

            for (int i = 0; i < str1.Length; ++i)
            {
                if (str1.Length - (i + 1) < p.Length)
                {
                    break;
                }

                if (p[0] == str1[i])                
                {
                    str2 = str1.Substring(i, p.Length);         //???????????????????????????????????????????????????

                    if (p == str2)
                    {
                        bl = true;
                        break;
                    }

                    i += (p.Length-1);
                }
            }

            if (bl)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
    }
}