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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<string.h>

int main(void){
    char s[200001], t[200001], c;
    int map[26];
    for(int i = 0; i < 26; i++){
        map[i] = 0;
    }
    scanf("%s\n%s", s, t);
    int length = strlen(s);

    for(int i = 0; i < length; i++){
        if(t[i] != s[i]){
            if(map[t[i] - 97] == 1){
                printf("No\n");
                return 0;
            }
            else{
                map[t[i] - 97]++;
            }
            c = s[i];
            for(int j = i; j < length; j++){
                if(s[j] == c){
                    s[j] = t[i];
                }
                else if(s[j] == t[i]){
                    s[j] = c;
                }
            }
        }
    }
    printf("Yes\n");
    return 0;
}