#include <iostream>

using namespace std;

int L, M, N;

int main() {
	cin >> L >> M >> N;
	int total = L * 100 + M * 25 + N * 1;
	int res = 0;
	total %= 1000;
	res += total / 100;
	total %= 100;
	res += total / 25;
	total %= 25;
	res += total;
	cout << res << endl;
	return 0;
}