import sys
from collections import deque, defaultdict
from copy import deepcopy
from bisect import bisect_left, bisect_right, insort_left, insort_right
from heapq import heapify, heappop, heappush
from itertools import product, permutations, combinations, combinations_with_replacement
from functools import reduce
from math import gcd, sin, cos, tan, asin, acos, atan, degrees, radians, ceil, floor, log, sqrt, ceil, floor, pi, hypot
from string import ascii_lowercase
from decimal import Decimal
sys.setrecursionlimit(1000000)
INF = 10**18
MOD = 10**9+7
# MOD = 998244353
yes="Yes"
no="No"
from random import randint
def II():return int(input())
def SI():return str(input())
def MI():return map(int,input().split())
def MS():return map(str,input().split())
def LI():return list(map(int,input().split()))
def LS():return list(map(str,input().split()))
a1,b1,a2,b2,a3,b3=MI()
a1%=2
a2%=2
a3%=2
if (a1+a2+a3)%2:
    print(":-(")
else:
    print(":-)")