import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import java.lang.String;
import javax.swing.JOptionPane;
 
public class polidromm {
    
    public static void main(String[] args) {
    String str;
      int left, right;
 
 
     
      {
         
         str = JOptionPane.showInputDialog("Entry Palindrome");
 
         left = 0;
         right = str.length() - 1;
 
         while (str.charAt(left) == str.charAt(right) && left < right)
         {
            left++;
            right--;
         }
 
         
 
         if (left < right)
          JOptionPane.showMessageDialog(null,"This is not a palindrome string");
         else
           JOptionPane.showMessageDialog(null,"This is  a palindrome string");
 
         
        
      }
   }
}