a1,b1,a2,b2,a3,b3 = list(input().split())

n1 = 1
for b in range(b1):
    n1 =  n1*a1
n2 = 1
for b in range(b2):
    n2 =  n2*a2
    
n3 = 1
for b in range(b3):
    n3 =  n3*a3

if (n1+n2+n3)%2 == 0:
    a = [":-)"]
else:
    a = [":-("]  

print("\n".join(map(str, a)))