indat = input().split()
qindex = indat.index('?')

if qindex == 0:
    if int(indat[1]) < int(indat[2]):
        print('4')
    else:
        print('1')
elif qindex == 1:
    print('14')
elif qindex == 2:
    if int(indat[0]) > int(indat[1]):
        print('4')
    else:
        print('1')