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: Wrong Answer)

using System;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            string t = Console.ReadLine();
            int[] s_ = new int[s.Length];
            int[] t_ = new int[t.Length];

            for(int num = 0; Array.IndexOf(s_, null) > -1;num++)
            {
                int tmp = Array.IndexOf(s_, null);
                for(int i = 0; i < s.Length; i++)
                {
                    if(s[i] == s[tmp])
                    {
                        s_[i] = num;
                    }
                }
            }
            for (int num = 0; Array.IndexOf(t_, null) > -1; num++)
            {
                int tmp = Array.IndexOf(t_, null);
                for (int i = 0; i < t.Length; i++)
                {
                    if (t[i] == t[tmp])
                    {
                        t_[i] = num;
                    }
                }
            }
            if(s_.Equals(t_))
            {
                Console.WriteLine("Yes");
            } else
            {
                Console.WriteLine("No");
            }
        }

        static int[] ReadIntgerArrayLine()
        {
            string[] tmp = Console.ReadLine().Split(' ');
            int[] result = new int[tmp.Length];
            for(int i = 0; i<tmp.Length; i++)
            {
                result[i] = int.Parse(tmp[i]);
            }
            return result;
        }

        static int ReadIntger()
        {
            return int.Parse(Console.ReadLine());
        }
    }
}