from math import comb

C = []
dic = {3: 1, 4: 1, 7: 1, 11: 3, 14: 2, 17: 1, 22: 1}
ans = 1
for i in range(26):
    x = int(input())
    if i in dic:
        if x < dic[i]:
            print(0)
            exit()
        if i == 11:
            t = 1
            for k in range(x - 2):
                t = max(t, comb(k + 2, 2) * (x - k - 2))
            ans *= t
        elif i == 14:
            t = 1
            for k in range(x - 1):
                t = max(t, (k + 1) * (x - k - 1))
            ans *= t
        else:
            ans *= x
print(ans)