120 - Increase of Population

Increase of Population

Time Limit: 1 sec


The Problem

In Bangladesh every year X persons are born and Y persons die, for every one thousand of the population. What is the percentage rate of increase of polulation in a year ?  



if X = 25 and Y = 15 then

Increase rate 1%




The Input

The input file contains only 2 integer numbers X, (X<1000, < 1000, X >= Y).


The Output

Output will show the one integer numbers which is percentage rate of increase of polulation in a separate line.


Sample Input

25 15


Sample Output






Problem Setter: Shahin ShamS