PROGRAMMING:String a-b

This problem requires you to calculate a-b. However, the trouble is that both a and B are strings - that is, delete all the characters contained in string B from string a, and the remaining characters are composed of string a-b.
###Input format:
The input gives the strings a and B in two lines. Each string is made up of visible ASCII code and ends with a newline character.
###Output format:
Print out the result string of A-B in one line.
###Input example:
```in
I love Python! It's a fun game!
aeiou
```
###Output example:
```out
I lv Pythn! It's fn gm!
```







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