c1,c2,c3 = map(str,input().split())
if ((c1 == '2') and (c2 == '3')) or ((c2 == '3') and (c3 == '2')) :
    print("1")
elif ((c1 == '2') and (c3 == '3') or ((c1 == '3') and (c3 == '2'))) :
    print("14")
else :
    print("4")