ca = [1, 25, 100, 1000]
li = [0] * 4
li = [int(input()) for _ in range(3)][::-1] + [0]
for i in range(3):
    if li[i] * ca[i] >= ca[i + 1]:
        li[i + 1] += li[i] * ca[i] // ca[i + 1]
        li[i] = li[i] * ca[i] % ca[i + 1] // ca[i]
print(sum(li[:-1]))