import java.util.StringTokenizer;
import java.io.*;

class StringTokenizerTest1
{
 public static void main(String[] args) throws IOException
 {
  BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
  System.out.println("Enter marks for your units all on one line: ");
  String marks = input.readLine();
  StringTokenizer toks = new StringTokenizer(marks);
  int count=0,sum=0;
  while(toks.hasMoreTokens())
      {
       count++;
       sum=sum+Integer.parseInt(toks.nextToken());
      }
  double mean = (double)sum/count;
  String str = String.format("You have %2d units and average %5.2f%% marks",count,mean);
  System.out.println(str);
 }
}