#include <bits/stdc++.h>
using namespace std;
int main() {
	int L, M, N;
	cin >> L >> M >> N;
	int S = (L * 100 + M * 25 + N) % 1000;
	int ans = S / 100;
	S %= 100;
	ans += S / 25;
	S %= 25;
	ans += S;
	cout << ans << endl;
	return 0;
}