Diffy Again

Time Limit: 1 sec

 

[ Before start to solve the problem please read Class – 2 in Classes tab or Read Me ]

 

The Problem

Make a simple program that reads two variables named A, B. Calculate and print the difference of A and B (A - B).

 

The Input

Input file consist of several test cases. Each test case contains a line and each line will contains two integers A and B (0<A, B<10000 and A>B). Input is terminated by EOF.

 

The Output

For each test case you should output a line. This line contains the value of the difference of A and B.

 

Sample Input

13 5

10 5

12 2

 

Sample Output

8

5

10

 

 

 

 

Problem Setter: Shahin ShamS