#include <iostream>
#include <queue>
#include <vector>
#include <cstdio>
#include <algorithm>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(n);i++)
const int INF = 1e9;

int main(void){
	int l, m, n;
	cin >> l >> m >> n;
	int sum = 0;
	sum += l * 100 + m * 25 + n;

	int ans = 0;
	//1000円硬貨に
	sum -= 1000 * (sum / 1000);
	//100円硬貨に
	ans += sum / 100;
	sum -= (sum / 100) * 100;
	//25円硬貨に
	ans += sum / 25;
	sum -= (sum / 25) * 25;
	//1円硬貨に
	ans += sum;
	cout << ans << endl;
	return 0;
}