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

while N >= 25:
    if N >= 1000:
        N -= 1000

    elif N >= 100:
        N -= 100
        L += 1

    elif N >= 25:
        N -= 25
        M += 1

while M * 25 >= 100:
    if M * 25 >= 1000:
        M -= 40

    elif N * 25 >= 100:
        M -= 4
        L += 1

while L * 100 >= 1000:
    if L * 100 >= 1000:
        L -= 10


print(N+M+L)