Hamming Distance
Description
Hamming distance between two strings of equal length is the number of positions at which the corresponding symbols are different. You are given two strings; calculate the distance between them.
The input consists of two lines. Each line contains a string of characters 'A'-'Z' between 1 and 100 characters, inclusive. The strings have equal length.
Output Hamming distance between the strings.
Input
The input consists of two lines. Each line contains a string of characters 'A'-'Z' between 1 and 100 characters, inclusive. The strings have equal length.
Output
Output Hamming distance between the strings.
Samples
CODECHEF
TOPCODER
6
HAMMING
DISTANC
6