import java.util.*;

public class changeMoney {

	public static void main(String[] args) {
		Scanner sn = new Scanner(System.in);
		int h = sn.nextInt();
		int t = sn.nextInt();
		int w = sn.nextInt();
		int count = h + t + w;
		sn.close();
		
		if(w >= 25){
			w = w/25 + w%25;
			t += w/25;
		}else if(t >= 4){
			t = t/4 + t% 4;
			h += t/4;
		}else if(h >= 10){
			h = h/10 + h%10;
		}else{
			System.out.println(count);
		}

		
	}

}