import sequtils,strutils
var
    C = stdin.readline.split
    
if C[1] == "?":
    echo 14
elif C[0] == "?" and C[2] == "3":
    echo 4
elif C[0] == "?":
    echo 1
elif C[2] == "?" and C[0] == "3":
    echo 4
else:
    echo 1