#include <iostream>
#include <cmath>
using namespace std;
int main(){
	int l,m,n,sum;
	int a,b,c;
	cin >> l >> m >> n;
	sum = l*100+m*25+n;
	a = sum/1000;
	sum = sum%1000;
	b = sum/100;
	sum = sum%100;
	c = sum/25;
	sum = sum%25;
	cout << b+c+sum << endl;
}