n = int(input())
A = [input().split() for _ in range(n)]
tot = 0
for row in A:
    for a in row:
        if a != "?":
            tot += int(a)

if n == 1:
    print(1)
elif n == 2:
    print(2 - tot)
elif n == 3:
    print(5 - tot)
elif n == 4:
    print(4 - tot)
elif n == 5:
    three = False
    for row in A:
        if "3" in row:
            three = True
            break
    if three:
        print(13 - tot)
    else:
        print(8 - tot)
elif n == 6:
    print(10 - tot)
elif n == 8:
    print(8 - tot)
elif n == 10:
    if tot >= 20:
        print(26 - tot)
    else:
        print(16 - tot)