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: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
 
static class MainClass {

  public static void Main (string[] args) {
    var X = ReadLineString();
    var Y = ReadLineString();

    var ans ="No";
    
    if(X.GroupBy(g => g).Select((x, i) => x.Count()).SequenceEqual(Y.GroupBy(g => g).Select((x, i) => x.Count()))){
      ans = "Yes";
    }

    /*test.ToList().ForEach(Console.WriteLine);
    test2.ToList().ForEach(Console.WriteLine);*/
    Console.WriteLine(ans);
  }

  static int ReadLineInt_1() {
    return int.Parse(Console.ReadLine());
  }
 static string ReadLineString() {
    return Console.ReadLine();
  }
  static IEnumerable<long> ReadLineLongList() {
    return Console.ReadLine().Split(' ').Select(long.Parse);
  }

}