L = int(input())
M = int(input())
N = int(input())

# Convert 1-yen to 25-yen
q, N = divmod(N, 25)
M += q

# Convert 25-yen to 100-yen
q, M = divmod(M, 4)
L += q

# Convert 100-yen to 1000-yen (only remainder affects the coin count)
L %= 10

# Sum the remaining coins
print(L + M + N)