#include <iostream>

using namespace std;

int main() {
	int l(0), m(0), n(0);
	cin >> l >> m >> n;
	int total = l * 100 + m * 25 + n * 1;
	int coinAmount = total % 1000;
	int coin100 = coinAmount / 100;
	int coin25 = (coinAmount - coin100 * 100) / 25;
	int coin1 = coinAmount - coin100 * 100 - coin25 * 25;
	cout << coin100 + coin25 + coin1 << endl;
	return 0;
}