#include <iostream>
#include <string>
using namespace std;

int main() {
	int L,M,N;
	cin >> L >> M >> N;
	
	int cost = (L*100 + M*25 + N) % 1000;
	int s = cost/100 + (cost%100)/25 + cost%25;
	
	cout << s << '\n';
	return 0;
}