package yukicoder032;
import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int l=sc.nextInt();//100
		int m=sc.nextInt();//25
		int n=sc.nextInt();//1
		m+=n/25;
		n-=n/25*25;
		
		l+=m/4;
		m-=m/4*4;
		l-=l/10*10;
		System.out.println(l+m+n);
	}
}