import java.util.*;
import java.io.*; 
import java.text.*;
//Solution Credits: Taranpreet Singh
public class Main{
    //SOLUTION BEGIN
    void solve(int TC) throws Exception{
        int n = ni();
        int[] mx = new int[]{-1,-1}, mx2 = new int[]{-1, -1};
        HashMap<Integer, Integer>[] map = new HashMap[]{new HashMap<>(), new HashMap<>()};
        for(int i = 0; i< n; i++){
            int x = ni();
            int f = map[i%2].getOrDefault(x, 0)+1;
            map[i%2].put(x, f);
            if(map[i%2].getOrDefault(mx[i%2], 0) < f){
                mx2[i%2] = mx[i%2];
                mx[i%2] = x;
            }else if(map[i%2].getOrDefault(mx2[i%2],0)<f && mx[i%2]!=x)mx2[i%2] = x;
        }
        if(mx[0]!=mx[1])pn(n-map[0].get(mx[0])-map[1].get(mx[1]));
        else{
            int ans = n;
            ans = Math.min(n-map[0].get(mx[0])-map[1].getOrDefault(mx2[1], 0), ans);
            ans = Math.min(ans, n-map[0].getOrDefault(mx2[0], 0)-map[1].get(mx[1]));
            pn(ans);
        }
    }
    //SOLUTION ENDS
    long mod = (int)1000000001, IINF = (long)1e14;
    final int MAX = (int)1e6+1, INF = (int)1e14, root = 3;
    DecimalFormat df = new DecimalFormat("0.00000000000");
    double PI = 3.141592653589793238462643383279502884197169399375105820974944, eps = 1e-8;
    static boolean multipleTC = false, memory = true;
    FastReader in;PrintWriter out;
    void run() throws Exception{
        in = new FastReader();
        out = new PrintWriter(System.out);
        int T = (multipleTC)?ni():1;
        //Solution Credits: Taranpreet Singh
        for(int i = 1; i<= T; i++)solve(i);
        out.flush();
        out.close();
    }
    public static void main(String[] args) throws Exception{
        if(memory)new Thread(null, new Runnable() {public void run(){try{new Main().run();}catch(Exception e){e.printStackTrace();}}}, "1", 1 << 28).start();
        else new Main().run();
    }
    long gcd(long a, long b){return (b==0)?a:gcd(b,a%b);}
    int gcd(int a, int b){return (b==0)?a:gcd(b,a%b);}
    int bit(long n){return (n==0)?0:(1+bit(n&(n-1)));}
    void p(Object o){out.print(o);}
    void pn(Object o){out.println(o);}
    void pni(Object o){out.println(o);out.flush();}
    String n(){return in.next();}
    String nln(){return in.nextLine();}
    int ni(){return Integer.parseInt(in.next());}
    long nl(){return Long.parseLong(in.next());}
    double nd(){return Double.parseDouble(in.next());}

    class FastReader{
        BufferedReader br;
        StringTokenizer st;
        public FastReader(){
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public FastReader(String s) throws Exception{
            br = new BufferedReader(new FileReader(s));
        }

        String next(){
            while (st == null || !st.hasMoreElements()){
                try{
                    st = new StringTokenizer(br.readLine());
                }catch (IOException  e){
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine(){
            String str = "";
            try{    
                str = br.readLine();
            }catch (IOException e){
                e.printStackTrace();
            }   
            return str;
        }
    }
}   

Measured memory_bytes: 48132