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];
        for(int types_i=0; types_i < n; types_i++){
            types[types_i] = in.nextInt();
        }
       int[] count = new int[5];
       
        for(int a: types){
        if(a == 1){
            count[0] = count[0]+1;
        }else if(a==2){
            count[1] = count[1]+1;
        }else if(a==3){
            count[2] = count[2]+1;
        }else if(a==4){
            count[3] = count[3]+1;
        }else{
            count[4] = count[4]+1;
        }
        }
        int temp = 0;
        for(int a: count){
            if(temp < a){
                temp = a;
            }
        }
        System.out.print(temp+1);
    }
}