import java.util.Scanner;

public class Main{

	static Scanner s=new Scanner(System.in);

	public static void main(String __[]){
		input();
		solve();
	}

	private static void input(){
	}

	private static void solve(){
		int in=s.nextInt()*100+s.nextInt()*25+s.nextInt();
		in%=1000;
		System.out.println(in/100+(in%100)/25+(in%25));
	}
}