import java.io.File;
import java.io.FileFilter;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.FileWriter;
import java.io.PrintWriter;

/** 
 * Popis tridy FileDemo
 * <tt>neco</tt>
 *
 */
public class FileDemo {
    
    public static void main(String[] args) throws Exception {
      
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      
      String radek = br.readLine();
      
      int i = Integer.parseInt(radek);
      
      PrintWriter out = new PrintWriter(new FileWriter("out.txt"));
      
      out.println(i);
      
      out.close();

    }
  
  public static void dir(File d) {

      FileFilter ff = new FileFilter() {
        
        public boolean accept(File f) {
          return f.isFile();
        }
        
      };
      
      File[] soubory = d.listFiles(ff);

      for(int i = 0; i < soubory.length; i++) {
    
        System.out.println(soubory[i].getAbsolutePath());
        
      }
  }
}