# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")
import copy

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	a, b, c = input().split()
	if a == "?":
		if b == "2":
			print(4)
		else:
			print(1)

	elif a == "2":
		if b == "?":
			print(14)
		else:
			print(1)
	else:
		if b == "?":
			print(14)
		else:
			print(4)




if __name__ == '__main__':
	main()