package com.company;
import java.io.IOException;
import java.util.*;
public class Main {

    public static void main(String[] args) throws IOException {

        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        Integer k;
        int tmp = 0;
        for (int i = 0; i < n; i++){
            k = sc.nextInt();
            if(i==0 |tmp < k){ System.out.println(k);
            tmp = k; }
        }

    }
}