import java.util.Scanner;

public class Main {
    public static void main(String args[]){
        Scanner stdIn = new Scanner(System.in);
        int n = stdIn.nextInt();
        int sum = 1;
        int size[] = new int[n];
        boolean flag = true;
        
        for(int i = 0; i < n; i++){
            size[i] = stdIn.nextInt();
        }
        
        for(int i = 1; i < n; i++){
            if(flag){
                if(size[i] == size[i - 1]){
                    sum++;
                }else{
                    flag = false;
                }
            }else{
                sum++;
                flag = true;
            }
        }
        
        System.out.println(sum);
        
        
    }
}