import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        
        int n = in.nextInt();
        int[] types = new int[n];
        int[] birdScore = {0,0,0,0,0,0}; 
        
        for(int i = 0; i < n; i++){
            types[i] = in.nextInt();
            birdScore[types[i]]++;
        }
        
        int mostBirds = 0;
        for(int i = 0; i < 6; i++){
           if (birdScore[i] > mostBirds) {
        	   mostBirds = birdScore[i];
           } 
        }
        System.out.println(mostBirds + 1);
    }
}