Problem Statement

You are on a social networking site called twiblr.
In twiblr, you can follow at most $2\\,\\times\\,($ the number of users following you $)\\,+\\,100$ users.
You are currently following $B$ users, and $A$ users are following you.
At most, how many extra users can you follow now?

Constraints

• $0 \\le A, B \\le 10000$
• $B \\le 2 \\times A + 100$
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

$A$ $B$

Output

Print the maximum number of extra users you can follow now.

Sample Input 1

200 300

Sample Output 1

200

You can follow at most $2 \\times 200 + 100 = 500$ users, that is, $200$ more users than you are following now.

Sample Input 2

10000 0

Sample Output 2

20100