#include <bits/stdc++.h>
using namespace std;

int l, m, n, t;

int main()
{
	cin >> l >> m >> n;
	t = (100 * l + 25 * m + 1 * n) % 1000;
	cout << t / 100 + (t % 100) / 25 + t % 25 << endl;
}