#552. Hamming distance
You are given two strings of the same length. Count the positions where they are different.
### Input
Two lines.
### Output
A number.
Examples
Input
baba aaba
Output
1
Input
aabbbababba bbaaaaabaab
Output
10
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.