# -*- coding: utf-8 -*-

def main():
    l = int(input())
    m = int(input())
    n = int(input())
    sum_ = (l * 100 + m * 25 + n) % 1000
    counter = sum_ // 100
    sum_ %= 100
    counter += sum_ // 25
    sum_ %= 25
    counter += sum_
    print(counter)

if __name__ == '__main__':
    main()