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

int main(){
	cin.tie(nullptr);
	ios_base::sync_with_stdio(false);
	
	int l,m,n;
	cin >> l >> m >> n;
	int sum = l*100+m*25+n;
	sum %= 1000;
	int cnt = 0;
	if(sum >= 100) {
		cnt += sum/100;
		sum %= 100;
	}
	if(sum >= 25){
		cnt += sum/25;
		sum %= 25;
	}
	cnt += sum;
	cout << cnt << endl;
	return 0;
}