a, b, c = map(str, input().split())
a_list = [a,b,c]
index = a_list.index("?")
if index == 0:
    if a_list[1] == '3':
        print('1')
    else:
        print('4')
elif index == 1:
    print('14')
else:
    if a_list[0] == '2':
        print('1')
    else:
        print('4')