n = int(input())
l = [int(_) for _ in input().split()]

x = sorted(l)[-1]
x = [i for i in range(1, x+1) if x%i == 0]

l1 = [j for i in l for j in x if i%j == 0]
l1 = [i for i in l1 if l1.count(i) == n][-1]
l1 = [str(int(i/l1)) for i in l]
print(':'.join(l1))