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 max;
        
        int[] count=new int[50];
        int[] a=new int[50];
        for(int i=0;i<n;i++)
            {
            a[i]=in.nextInt();
        }
        for(int j=0;j<n;j++)
            {
            if(a[j]==1)
                count[0]++;
            else if(a[j]==2)
                count[1]++;
            else if(a[j]==3)
                count[2]++;
            else if(a[j]==4)
                count[3]++;
            else
                count[4]++;
             }
       
       max=count[0];
     for(int k=0;k<=4;k++)
     {
         
         if(count[k]>max)
             max=count[k];
     }
      
        System.out.println(++max);
       
    }
}