import chn.util.*;

public class Lesson19B {

	public static void main(String[] args) {

		FileInput input = new FileInput("compact.txt");

		int[] numbers = new int[100];
		int n=0, size, count;

		while(input.hasMoreTokens()){
			numbers[n] = Integer.parseInt(input.readToken());
			n++;
		}
		size = n;
		count = size;

		for(int x=0; x<count; x++){
			if(numbers[x]==0){
				for(int y=x; y<count; y++){
					numbers[y] = numbers[y+1];
					size--;
				}
			}
		}

		for(int z=0; z<count; z++){
			System.out.println(numbers[z]);
		}

	}

}