rem Programming Contest Problem
rem find the gcd of two numbers

rem Solution 1: brute force

Input "First number: " a
Input "Second number: " b

c = a

20 if mod(a,c) = 0 and mod(b,c) = 0 then
     print "GCD: ", c
     goto 50
   else
     c = c - 1
   endif
goto 20

50 end