# Read input
counts = [int(input()) for _ in range(26)]

# Extract the required counts
h = counts[7]
e = counts[4]
l_count = counts[11]
o = counts[14]
w = counts[22]
r = counts[17]
d = counts[3]

# Check if the required characters are present in sufficient amounts
if h < 1 or e < 1 or l_count < 3 or o < 2 or w < 1 or r < 1 or d < 1:
    print(0)
else:
    # Calculate maximum contribution from 'l'
    max_l = 0
    for x in range(2, l_count):
        # remaining l's = l_count - x
        current = (x * (x - 1) * (l_count - x)) // 2
        if current > max_l:
            max_l = current

    # Calculate maximum contribution from 'o'
    o_contrib = (o // 2) * ((o + 1) // 2)

    # Compute the result
    result = h * e * max_l * o_contrib * w * r * d
    print(result)