#include<iostream>

int main() {
	int l, m, n;
	std::cin >> l >> m >> n;

	int total = l * 100 + m * 25 + n;
	total %= 1000;

	int coins = total / 100;
	total %= 100;
	coins += total / 25;
	total %= 25;
	coins += total;

	std::cout << coins << std::endl;
	return 0;
}