#穴埋め門松列


import numpy as np
a = "2 3 ?"

a = a.split(" ")
a = np.array(a)

question = np.where(a=="?")[0]
two = np.where(a=="2")[0]
three = np.where(a=="3")[0]

if(question==1):
    print(1,4)
if(two==1):
    print(4)
if(three==1):
    print(1)