#include <iostream>
#include <algorithm>
#include <vector>
#include <sstream>
#include <math.h>
using namespace std;
/*
 *【篩選特殊迴文數字】
 *步驟1：求出迴文數（注意求迴文數的方法，方法low了很耗時）
 *步驟2：判斷是否滿足條件
 */
int main()
{
    int n;
    while (cin>>n)
    {
        vector<int>v;
        for
 
 (int i = 100; i <= 999;i++)
        {
            int x1 = i,x2=i/10;
            stringstream ss,ss1,ss2; string num,num1,num2;
            ss << i; ss >> num;
            ss2 << x2; ss2 >> num2; reverse(num2.begin(), num2.end());//5位
            ss1 << x1; ss1 >> num1; reverse(num1.begin(),num1.end());//6位
 

            string x = num + num1;
            int sum = 0; int xx = 0;
            for (int j = 0; j < x.length();j++)
            {
                sum += x[j] - '0';
                xx += (x[j] - '0')*pow(10,(x.length() - 1 - j));
            }
            if (sum == n)v.push_back(xx);

            x = num + num2; xx = 0
 
; sum = 0;
            for (int j = 0; j < x.length(); j++)
            {
                sum += x[j] - '0';
                xx += (x[j] - '0')*pow(10, (x.length() - 1 - j));
            }
            if (sum == n)v.push_back(xx);
        }
        if (v.size() == 0)cout << -1 << endl;
        else
        {
            sort(v.begin(), v.end());
            for (int i = 0; i < v.size(); i++)
                cout << v[i] << endl;
        }
    }
    return 0;
}