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();
        }
        // your code goes here
        int type1, type2, type3, type4, type5;
        type1 = type2 = type3 = type4 = type5 = 0;
        
        int typeNumber[] = {1,2,3,4,5};
        
        for(int i=0; i<types.length; i++){
            if(types[i]==1){type1++;}
            if(types[i]==2){type2++;}
            if(types[i]==3){type3++;}
            if(types[i]==4){type4++;}
            if(types[i]==5){type5++;}
        }
       //System.out.println(type4); 
       int myTypes[] = {type1,type2,type3,type4,type5}; 
       //System.out.println(myTypes[3]);
       int temp = 0;
       int Stemp = 0;
        for(int i = 0; i<myTypes.length-1;i++){
            for(int j=i+1; j<myTypes.length;j++){
                if(myTypes[i]>myTypes[j]){
                    temp = myTypes[j];
                    myTypes[j]=myTypes[i];
                    myTypes[i]= temp;
                    //for strings array
                    Stemp = typeNumber[j];
                    typeNumber[j]= typeNumber[i];
                    typeNumber[i]= Stemp;
                }
            }
        }
        //System.out.println("Type Number:"+typeNumber[4]);
        //System.out.println("How many:"+myTypes[4]);
        if(myTypes[4]==myTypes[3]){
            if(typeNumber[4]<typeNumber[3]){
                System.out.println(typeNumber[4]);
            }else{
                System.out.println(typeNumber[3]);
            }
        }else{
            System.out.println(typeNumber[4]);
        }
        //System.out.println(myTypes[0]);
        //System.out.println(typeNumber[0]);
    }
}