#include "bits/stdc++.h"
using namespace std;


int main() {
	int L, M, N;
	cin >> L >> M >> N;
	int price = L * 100 + M * 25 + N;
	int ans = (price % 1000) / 100;
	ans += (price % 100) / 25;
	ans += (price % 25);
	cout << ans << endl;
}