#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
using namespace std;

int main() {
	int l, m, n, ans;
	cin >> l >> m >> n;
	ans = (l * 100 + m * 25 + n) % 1000;
	cout << ans / 100 + ans % 100 / 25 + ans % 25 << endl;
	return 0;
}