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

using namespace std;

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

	cin >> l >> m >> n;

	ans += n % 25;
	m   += n / 25;
	ans += m % 4;
	l   += m / 4;
	ans += l % 10;

	cout << ans << endl;
	return 0;
}