#include<iostream>
using namespace std;
int main()
{
	int l, m, n;
	cin >> l >> m >> n;
	int sum = l * 100 + m * 25 + n;
	sum %= 1000;
	int ans = sum / 100;
	sum %= 100;
	ans += sum / 25 + sum % 25;
	cout << ans << "\n";

	return 0;
}