import javax.swing.JOptionPane;
import java.io.*;
 public class Esercizio2
 {

 	public static int riduciFile (String nomeFile, int max) throws IOException
 	{
 		 int cont=0;
 		 FileReader f_in= new FileReader(nomeFile);
 		 BufferedReader in= new BufferedReader(f_in);
 		 String nuovo=nomeFile+"_ridotto.txt";
 		 FileWriter f_out=new FileWriter(nuovo);
 		 PrintWriter out=new PrintWriter(f_out);
 		 String s="";
 		 while(in.readLine()!=null)
 		 {
 		 	s=in.readLine();
 		 	if(s.length()<=max)
 		 	{
 		 		out.println(s);
 		 		cont++;
 		 	}
 		 }
 		 f_in.close();
 		 in.close();
 		 f_out.close();
 		 out.close();
 		 return cont;

 	}

 }