import java.util.Scanner;

public class Ex6_svar {
   public static void  main(String[] arg) {
        int tal, sum=0, i=0, a;
	Scanner scan = new Scanner(System.in);

        System.out.println("Mata in ett tal: ";
        tal = Std.in.readInt();
        while (tal >=0) {
           i++;
           sum = sum + tal;
           System.out.println("Mata in ett tal: ");
           tal = scan.nextInt();
        }
        System.out.println("Summan av talen blev: " + sum +
                        ". Antal tal var " + i);
   }
}