Objective

Give practice with reading and writing to standard input in $C.$

Give practice with loops and conditionals in C$.$

Give practice with strings in C$.$

Background Story

Your newest project is working on revitalizing the movie industry. There will be a lull in the upcoming movie productions due to all the strikes, and you want to support the area by renovating a local big box store into a theater.

The first major change is to fix the signage around the store to reflect the new purpose of the space. The letters themselves of the old store are fine, and we still want a sign in the same places. The message on the sign will change, but to save costs we will reuse as many letters as possible.

Problem

Given the original message and the new message determine how many new letters will need to be purchased to create the new sign.

Input

The first line of input will contain a sequence of characters $($uppercase letters and spaces$)$ denoting the original message of the sign. The second line of input will contain a sequence of characters $($uppercase letters and spaces$)$ denoting the desired resulting message of the sign.