import java.util.*;

public class ExchangeCanadianRate{
	private double[] us2caRates;
	private double amount;
	
	public ExchangeCanadianRate(double[] rates, float amount){
		this.amount = amount;
		this.us2caRates = rates;
	}
	public static void main(String[] args){
		String input = "3\n1.0500\n0.9300\n0.9900\n2\n1.0500\n1.1000\n3\n.9\n1.1\n0.9\n0";
		Scanner sf = new Scanner( input );
		double[] ca_us_rate = null;
		
	
		while(sf.hasNext()){
			int n = sf.nextInt();
			if(n == 0) break;
			ca_us_rate = new double[n]; 
			for(int i=0;i<n;i++){
				ca_us_rate[i] = sf.nextDouble();
			}
			
			System.out.println("ca_us_rate:" + java.util.Arrays.toString(ca_us_rate));
			ExchangeCanadianRate obj = new ExchangeCanadianRate(ca_us_rate,1000f);
			obj.process();
			System.out.println("...........................");
		}
	}
		
		public void process(){
			//compute the number of choices to insert pluses
			long N = (long)Math.pow( 2 , this.us2caRates.length);
				

			List<Double> solutions = new ArrayList<Double>();
			List<String> sstr = new ArrayList<String>();
			for(int i=0;i<N;i++){
				// binary representation of mask variable is used to
				// decide where to put the pluses.
				long mask = i;
				boolean inCanadian = true;
				double rate = 0;
				double money = this.amount;
				StringBuffer sb = new StringBuffer();
				int lastIndex = -1;
				for(int index = 0;index<this.us2caRates.length;index++){					
					int rmd = (int) ( 1 & mask);
					mask = mask >> 1;					
					if(rmd == 1) {
						// handle the case from us->ca or ca->us
						if(!inCanadian) rate = this.us2caRates[index];
						else rate = 1f/this.us2caRates[index];						
						money = money * rate ;
						money -= money * 0.03;
						inCanadian = !inCanadian;
						lastIndex = index;
						sb.append(1);
					}else sb.append(0);					
				}	
				if(!inCanadian){
					money = money * this.us2caRates[lastIndex];
				}
				solutions.add(money);
				sstr.add(sb.toString());
			}	
			format(solutions, sstr);
		}
		public void format(List<Double> lst, List<String> strl){
			double max = lst.get(0);
			for(int i=0;i<lst.size();i++){
				double a = lst.get(i);
				if(a > max) max = a;
			}
			
			for(int i=0;i<lst.size();i++){
				double a = lst.get(i);
				System.out.println(strl.get(i) + "===>" +lst.get(i) +
						(a == max ? " ===>Best Choice" : ""));
			}
		}
}