Slide Calipers

Time Limit: 1 sec

 

The Problem

One day Arif found a slide calipers. He eagerly wanted to know how this thing measures the value of a rectangular substance. Can you help Arif to find the Length of a rectangular substance?

 

 

The Input

The input file contains 2 numbers Main Scale Reading (M) and Vernier Super Imposition (V) (M<=100, V<=10) in mm.

 

The Output

Output will show a value rounded to 2 decimal places which is Length in a separate line.

 

Sample Input

11 7

 

Sample Output

1.17 cm

 

 

 

 

 

Problem Setter: Shaquib Mahmud

Special thanks to Samia Safa Ahmed