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Contest: Task: Related: TaskB

Score : $100$ points

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

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