import java.util.*;
public class Exchange{
	public static void main(String[] arg){
		int n,m,l;
		Scanner sc = new Scanner(System.in);
		l = sc.nextInt();
		m = sc.nextInt();
		n = sc.nextInt();
		while(l>=25){
			l = l - 25;
			m++;
		}
		while(m>=4){
			m = m - 4;
			n++;
		}
		while(n>=10){
			n = n - 10;
		}
		System.out.println(n+m+l);
	}
}