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import java.io.*;

class  harmonicSeries 
{
    public static void main(String args[]) 
    {
         int i,n;
         String s;
        double  sum=0;

         try{
               System.out.println(\"=====HARMONIC SERIES=====\");
               System.out.print(\"Enter value of n : \");
               System.out.flush();

               BufferedReader  ob1 = new BufferedReader(new InputStreamReader(System.in));
               s=ob1.readLine();
               n=Integer.parseInt(s);

               while(n>0)
               {
                       sum=sum+(1.0/n);
                       n--;
               }

               System.out.println(\"Sum of Harmonic Series for value  \\\"\"+s+\"\\\" is  :  \"+ sum);
               }

               catch (Exception e)
               {}
    }
}