def main():
    L = int(input())
    M = int(input())
    N = int(input())

    cash = 100 * L + 25 * M + N
    mod_ = cash % 1000
    ans = 0
    for i in (100, 25, 1):
        coin, mod_ = divmod(mod_, i)
        ans += coin

    print(ans)

main()