Problem:
Score : 300 points

Problem Statement

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

You can perform the following operation on S any number of times:

Operation: Choose two distinct lowercase English letters c_1 and c_2, then replace every occurrence of c_1 with c_2, and every occurrence of c_2 with c_1.

Determine if S and T can be made equal by performing the operation zero or more times.

Constraints

1 \leq |S| \leq 2 \times 10^5

|S| = |T|

S and T consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S
T

Output

If S and T can be made equal, print Yes; otherwise, print No.

Sample Input 1

azzel
apple

Sample Output 1

Yes

azzel can be changed to apple, as follows:

Choose e as c_1 and l as c_2. azzel becomes azzle.

Choose z as c_1 and p as c_2. azzle becomes apple.

Sample Input 2

chokudai
redcoder

Sample Output 2

No

No sequences of operation can change chokudai to redcoder.

Sample Input 3

abcdefghijklmnopqrstuvwxyz
ibyhqfrekavclxjstdwgpzmonu

Sample Output 3

Yes

Solution in C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

// デバッグ実行：Ctrl+F5

using System;

class Program
{
    static void Main(string[] args)
    {
        String line;
        //line = Console.ReadLine();
        //String[] words = line.Split(' ');

        string S = Console.ReadLine();
        string T = Console.ReadLine();

        int[] Scount, Tcount;
        Scount = new int[26];
        Tcount = new int[26];
        for (int i = 0; i < 26; i++)
        {
            Scount[i] = 0;
            Tcount[i] = 0;
        }
        for(int i = 0; i < S.Length; i++)
        {
            Scount[S[i] - 'a']++;
            Tcount[T[i] - 'a']++;
        }
        // 後はソートするだけ
        Array.Sort(Scount);
        Array.Reverse(Scount);
        Array.Sort(Tcount);
        Array.Reverse(Tcount);

        // 判定
        bool result = true;
        for (int i = 0; i < S.Length; i++)
        {
            if (Scount[i] != Tcount[i])
            {
                result = false;
                break;
            }
        }
        if (result) Console.WriteLine("Yes");
        else Console.WriteLine("No");
    }
}