#!/usr/bin/python
def gcd(*args):
if len(args) == 1:
return args[0]
L = list(args)
while len(L) > 1:
a = L[len(L) - 2]
b = L[len(L) - 1]
L = L[:len(L) - 2]
while a:
a, b = b%a, a
L.append(b)
return abs(b)
#if __name__ == "__main__":
print gcd(68, 14, 9, 36, 126)