public class hdj1
{
   public static void main(String args[])
     {
        int i;
        int f[]=new int[31];
        f[0]=1;f[1]=1;
        for(i=2;i<=30;i++)
          f[i]=f[i-1]+f[i-2];
            System.out.println("f[30]="+f[30]);
      }
}