import javax.swing.*;
import java.io.*;
import java.util.*;

public class MP2{
    public static void main(String[] args)
    throws IOException{
        String fileName="/*This is where you will place the location of the .txt file*/";
        FileReader fr=new FileReader(fileName);
        BufferedReader br=new BufferedReader(fr);
        String inLine;
        boolean repeat=true;
        while(repeat){            /*i really don't know what to do here...*/
            inLine=br.readLine();
            if(inLine==null){
                repeat=false;
                break;
            }
            else{
                String inStream;
                StringTokenizer st=new StringTokenizer(inLine);
                while(st.hasMoreTokens()){
                    inStream=st.nextToken();
                    int num=Integer.parseInt(inStream);
                    if(num==0){
                    break;
                    }
                    else{
                        System.out.println(num);
                        int[] palArr=new int[num+1];
                        for(int i=0; i<inStream.length(); i++){
                            palArr[i]=num;
                            
                        }
                    }
                }
            }
        }
        fr.close();
    }
}

try{
    //Read the text file
    DataInputStream in = new DataInputStream(new FileInputStream("input.txt"));
    String contents = "";
    while (in.available() != 0){
        contents = contents.concat(in.readLine()+"\n");
    }
    in.close();

    //Get the indexes listed in the file
    String[] inx = contents.split("\n");
    int[] indexes = new int[inx.length];
    for (int i=0; i<inx.length; i++){
        indexes[i] = Integer.parseInt(inx[i]);
    }

    //Open the output file
    PrintStream p = new PrintStream(new FileOutputStream("output.txt"));

    //Get the palindromes and write to file
    for (int i=0; i<indexes.length; i++){
        int num = 0;
        int pid = 0;
        int rid = indexes[i];
        while (pid < rid){
            if (new StringBuffer(String.valueOf(num)).reverse().toString().equals(String.valueOf(num)) == true){
                pid += 1;
            }
            num += 1;
        }
        p.println(String.valueOf(num));
    }
    p.close();
}
catch (IOException err){}

    for (int i=0; i<inx.length; i++){
                    indexes[i] = Integer.parseInt(inx[i]);
                }

                   PrintStream p = new PrintStream(new FileOutputStream("C:\\output.txt"));
                   for (int i=0; i<indexes.length; i++){
                    int num = 0;
                    int pid = 0;
                    int rid = indexes[i];
                    while (pid < rid){
                        if (new StringBuffer(String.valueOf(num)).reverse().toString().equals(String.valueOf(num)) == true){
                            pid += 1;
                        }
                        num += 1;
                    }

for (int i=0; i<inx.length; i++){
                    indexes[i] = Integer.parseInt(inx[i]);
                }

PrintStream p = new PrintStream(new FileOutputStream("C:\\output.txt"));

for (int i=0; i<indexes.length; i++){
                    int num = 0;
                    int pid = 0;
                    int rid = indexes[i];
                    while (pid < rid){
                        if (new StringBuffer(String.valueOf(num)).reverse().toString().equals(String.valueOf(num)) == true){
                            pid += 1;
                        }
                        num += 1;
                    }