f=open('input.txt')
g=open('output.txt','w')
s=[int(i) for i in f.read().split()]
s=[i for i in s if (i>0 and i %2 == 0)]
if s != []:
    print(str(min(s))+' '+str(max(s)), file = g)
else:
    print('0', file = g)
f.close()
g.close()

f = """1
2
3
4
-5
-8"""

myList = [ i for i in f.split('n')  if int(i) > 0 ]

print("{} {}".format(min(myList), max(myList)) if len(myList)==4 else "0")
1 4

f = """1
2
3
-5
-8"""

myList = [ i for i in f.split('n')  if int(i) > 0 ]

print("{} {}".format(min(myList), max(myList)) if len(myList)==4 else "0")
0