1004: A+B（基本输入输出4）

import java.util.Scanner;
public class Main {
  public static void main(String[] args) {
	  Scanner in =  new Scanner(System.in);
      while(in.hasNext()){
    	  int n = in.nextInt();
    	  if(n==0){
    		  break;
    	  }else{
    		  int result = 0;
    		  for(int i=1;i<=n;i++){
    			  int m = in.nextInt();
    			  result+=m;
    		  }
    		  System.out.println (result);
    	  }
    	  
      }
  
}
}
import java.util.Scanner;
public class Main {