#include<bits/stdc++.h>
using namespace std;

bool cheak(int x)
{
	string num = to_string(x);
	
	reverse(num.begin(), num.end());
	
	if(x * 9 == stoi(num)) return true;
	
	return false;
}

int main()
{
	for(int i = 1000; i <= 9999; i ++) 
		if(cheak(i)) cout << i << endl;
	
	return 0;
}