def main():
    L = input()
    M = input()
    N = input()
    sum_money = 100 * int(L) + 25*int(M) + int(N)
    remainder1000 = sum_money % 1000
    remainder100 = remainder1000 % 100
    count_100 = remainder1000/100
    remainder25 = remainder100 % 25
    count_25 = remainder100/25
    count = int(count_100) + int(count_25) + remainder25
    print(count)


if __name__ == '__main__':
    main()