import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

class hfak{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		List<String> output=new ArrayList<String>();

		while(sc.hasNext()){
			int a=sc.nextInt();
			if(a==0)
				break;
		List<String> color=new ArrayList<String>();
		List<Integer> count=new ArrayList<Integer>();
		String c=sc.nextLine();
		String modelcolor=c;
		int modelcount=1;
		while(--a>=0){
			String x=sc.nextLine();
			if (color.contains(x)){
				count.set(color.indexOf(x),count.get(color.indexOf(x))+1);
				if(count.get(color.indexOf(x))>modelcount){
					modelcolor=x;
					modelcount=count.get(color.indexOf(x));
				}
			}
			else{
				color.add(x);
				count.add(1);
			}
		}
		output.add(modelcolor);

		}
		for (int i=0;i<output.size();i++){

			System.out.println(output.get(i));
		}

	}

}