import java.util.*;
public class Average {


	public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String name=sc.nextLine();
        int a=sc.nextInt();
        int b=sc.nextInt();
        int c=sc.nextInt();
        System.out.println(name);
        System.out.print((a+b+c)/3);
		
		/* Your class should be named Solution.
	 	* Read input as specified in the question.
	 	* Print output as specified in the question.
		*/

		
	}

}