e-olymp
Competitions

October 9 - BMTK Programming School, High League

GCD of two numbers

Find the GCD (greatest common divisor) of two nonnegative integers.

prb1601_2.gif

Input

Two integers a and b (a, b < 2∙109).

Output

Print the GCD of a and b.

Time limit 1 second
Memory limit 128 MiB
Input example #1
42 24
Output example #1
6