/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package substrWord;

import java.io.BufferedReader;
import java.io.InputStreamReader;

/**
 *
 * @author Student
 */
public class java {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        
        String strLine="";
        int i;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter Index of String where you want it to stop:");
     
          try{
            strLine=br.readLine();
            
          }
    catch(Exception e){
        System.out.println("Error:"+e.toString());
                 }
         
        i = Integer.parseInt(strLine);
        
                String str="Yellow Fever";
        
       // for (int i=1; i<=str.length(); i++){
            
            System.out.println(str.substring(0,i));
           // System.out.println(str.length());
            
            
        }
            
        
        
        
        
        
    }