import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Scanner;

/**
 * Created by User on 17.02.2017.
 */

    public class Solution {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] m = new int[n];
        for(int m_i=0; m_i < n; m_i++){
            m[m_i] = in.nextInt();
        }
        long count = 0;
        if(n == 1 || n==2)
            count = 1;
        else{
                count=n-1+2;
        }
        System.out.println(count);
    }
    }