Find the XOR of two numbers and print it.
Hint : Input the numbers as strings.
Input Format
First line contains first number X and second line contains second number Y.
The numbers will be given to you in binary form.
Constraints
0 <= X <= 2^1000
0 <= Y <= 2^1000
Output Format
Output one number in binary format, the XOR of two numbers.
Sample Input 0
11011
10101
Sample Output 0
01110