# coding: utf-8
data = input().split()
if data[0] == '?':
    if int(data[1]) > int(data[2]):
        print('1')
    else:
        print('4')
elif data[1] == '?':
    print('14')
else:
    if int(data[0]) < int(data[1]):
        print('1')
    else:
        print('4')