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

public class _5639 {
    static void PostOrder(ArrayList<Integer> arr, int start, int end) {
        if(start > end) return;

        int root = arr.get(start);
        int mid = start + 1;

        while(mid <= end && arr.get(mid) < root) mid++;

        PostOrder(arr, start + 1, mid - 1);
        PostOrder(arr, mid, end);
        System.out.println(root);
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> nums = new ArrayList<>();

        while(sc.hasNextInt()) {
            nums.add(sc.nextInt());
        }

        sc.close();

        PostOrder(nums, 0, nums.size()-1);
    }    
}