L = [int(input()) for _ in range(3)]
for i in range(2, -1, -1):
    if i == 2:
        num = 25
    elif i == 1:
        num = 4
    elif i == 0:
        num = 10
    q, r = divmod(L[i], num)
    if i > 0:
        L[i - 1] += q
    L[i] = r
print(sum(L))