import java.io.*;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.lang.Math;


public class ADALAb3 {
	 public static void main(String[] args) throws IOException {
		BufferedReader input=new BufferedReader(new InputStreamReader(System.in));
		String n1=input.readLine();
		int n=Integer.parseInt(n1);
		int[] array = new int[n];
		String s2=input.readLine();
		int a1=0,a2=0,a3=0,a4=0,a5=0,a6=0;
		for(int i=0;i<(n+(n-1));i++ ){
			char a=s2.charAt(i);
			if(a=='1')
				a1++;
			else if(a=='2')
				a2++;
			else if(a=='3')
				a3++;
			else if(a=='4')
				a4++;
			else if(a==' ')
				a6++;
			else
				a5++;
		}
		int k;
		if(a1>a2)
			k=a1;
		else if(a1<a2)
			k=a2;
		else
			k=a2;
		
		if(k>a3)
			k=k;
		else if(k<a3)
			k=a3;
		else
			k=a3;
		
		if(k>a4)
			k=k;
		else if(k<a4)
			k=a4;
		else
			k=a4;
		
		if(k>a5)
			k=k;
		else if(k<a5)
			k=a5;
		else
			k=a5;
		
		if(a1==k)
			System.out.println(1);
		else if(a2==k)
			System.out.println(2);
		else if(a3==k)
			System.out.println(3);
		else if(a4==k)
			System.out.println(4);
		else
			System.out.println(5);
		
	 }
}