#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>

using namespace std;

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

	cin >> l >> m >> n;
	int total = l * 100 + m * 25 + n;
	int ans = total % 1000 / 100 + total % 100 / 25 + total % 25;
	cout << ans << endl;
	return 0;
}