a = open('input.txt', 'r')
b = open('output.txt', 'w')
nums = a.readlines()
mx = -10 ** 9
mn = 10 ** 9

for x in nums:
    x = int(x)
    if x % 2 == 0 and x > 0:
        if x > mx:
            mx = x
        if x < mn:
            mn = x

if mx != -10 ** 9 and mn != 10 ** 9:
    print(mn, mx, file=b, end='')
else:
    print(0, file=b, end='')