import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import java.util.Set;

public class Main {
	public static void main(String args[]) throws IOException {
		FastScanner fs = new FastScanner();
		Map<String,Integer> map = new HashMap<>();
		int max = 0;

		String word;
		int n = fs.nextInt();

		for(int i = 0; i < n; i++) {
			word  = fs.next();
			if(!map.containsKey(word)) {
				map.put(word, 1);
			} else {
				map.put(word,map.get(word) + 1);
			}
		}

		max = maxUsingCollectionsMaxAndLambda(map);
		 List<String> keys = new ArrayList<>();
		 keys = getKeys(map, max);

		 Collections.sort(keys);
		 keys.forEach(System.out::println);

	}
	public static <K, V> List<K> getKeys(Map<K, V> map, V value) {
	    List<K> keys = new ArrayList<>();
	    for (Entry<K, V> entry : map.entrySet()) {
	        if (entry.getValue().equals(value)) {
	            keys.add(entry.getKey());
	        }
	    }
	    return keys;
	}
	public static <K, V extends Comparable<V>> V maxUsingCollectionsMaxAndLambda(Map<K, V> map) {
	    Entry<K, V> maxEntry = Collections.max(map.entrySet(), (Entry<K, V> e1, Entry<K, V> e2) -> e1.getValue()
	        .compareTo(e2.getValue()));
	    return maxEntry.getValue();
	}
}


class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() { return Double.parseDouble(next());}
}



Measured memory_bytes: 74652