def main():
    C = input().split()
    i = C.index('?')
    if i == 0:
        if C[i+1]=='2':
            print(4)
        else:
            print(1)
    elif i == 1:
        print(14)
    else:
        if C[0] == '3':
            print(1)
        else:
            print(4)
        
if __name__ == '__main__':
    main()