using System;
using System.Collections.Generic;
public class Program
{
public static void Main()
List<int> t =new List<int>();
int[] r = new int [10];
for(int j=0;j<10;j++)
Console.Write("n=");
int n=int.Parse(Console.ReadLine());
int count=0;
for(int i=2;i<n;i++)
if(n%i==0)
count++;
}
if (count==0){
Console.WriteLine(" primary");
t.Add(n);
else
Console.WriteLine("not primary");
float sum=0;
foreach(int item in t){
Console.WriteLine(item);
sum+= item;
Console.WriteLine(sum/t.Count);
