#include <iostream>
//#include <numeric>
//#include <vector>
//#include <cstdint>
//#include <string>
using namespace std;

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

	int a, b, c;
	int x, y;

	a = (100 * l + 25 * m + n) % 1000;
	x = a / 100;
	b = a % 100;
	y = b / 25;
	c = b % 25;

	cout << x + y + c << endl;

	return 0;

}