import java.io.*;
import java.util.*;
import java.lang.*;
import static java.lang.System.out;


public class help {
	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	static StringTokenizer pstk = new StringTokenizer("");
	
	static String pline;
	
	public static void main(String[] args)throws Exception
	{
/*	    String line;
	    StringTokenizer stk;
	    line = br.readLine();
	    //compareTo("end")!0
	    stk = new StringTokenizer(line);
	    stk.nextToken(line);*/
	    

	    while(priklad());
	}
	
	public List<Integer> stack;
	
	public static boolean priklad() throws Exception {
		int pocet = readInt();
		if(pocet == 0)
			return false;
			
		long A = 0;
		long B = 0;
		
		ArrayList<Integer> list = new ArrayList<Integer>();
			
		for (int i = 0; i < pocet; i++)	
		{
			list.add(readInt());
		}
		
		for (int i = 0; i < pocet; i++)	
		{
			if ( (Integer)list.get(i) == 100000)
			{
				list.remove(i);
				A = 100000;
				out.print("100000-A ");
				break;
			}
		}
	
		Collections.sort(list);
		
		/*for (Object i: list)
		{
			out.print((Integer)i+" ");
		}*/
		
		int n;
		while ((n = list.size()) > 0)
		{
			int max = (int)(A - B);

			if (max < 0)
			max = -max;
				
			max += 100000;
			
			int castka;
			
			/*if (n == 0)
				return true;*/
			
			for (int i = n-1; i >= 0; i--)
			{
				//out.println("max=" + max + " hodnota=" + list.get(i));
				if (( castka = list.get(i) ) <= max)
				{
					list.remove(i);
					//out.println("remove " + i + " size=" + n);
					if (A > B)
					{
						out.print(castka + "-B ");
						B += castka;
					} else {
						out.print(castka + "-A ");
						A += castka;
					}
					break;
				}
			}
		}
		
		out.println();
		
		return true;
	}
	
	public static int readInt() throws Exception
	{
		return Integer.parseInt(readToken());
	}

	public static String readToken() throws Exception
	{
		while (!pstk.hasMoreTokens()) pstk = new StringTokenizer(pline = br.readLine());
		return pstk.nextToken();
	}
}