import java.io.*;
public class Erind3{
  public static void main(String argumendid[]){
    boolean korrata=true;
    while(korrata){
      try{
        BufferedReader sisse=new BufferedReader(
          new InputStreamReader(System.in)
        );
        System.out.println("Palun number:");
        String rida=sisse.readLine();
        int nr=Integer.parseInt(rida);
        System.out.println("Number "+nr+" sisestati korralikult.");
        korrata=false;
      } catch (IOException sisendierind){
        System.out.println("Probleem klaviatuuriga");
        korrata=false;
      } catch (NumberFormatException numbriformaadierind){
        System.out.println("Valesti sisestatud number. "+
            numbriformaadierind.getMessage()+
            "\n Proovi veel!");
      }
    }
  }
}