using System;

using System.Collections.Generic;

namespace SoloLearn

{

    class Program

    {

        static void Main(string[] args)

        {

        foreach(string i in HeteromecicList(long.Parse(Console.ReadLine()))){

        Console.WriteLine(i);

}

        }

        static (bool, long) Heteromecic(long n){

            for(long i=1;i<=10000000;i++){

                if(i*(i+1)==n){

                    return (true, i);

                }

            }

            return (false, -1);

        }

        static List<string> HeteromecicList(long n){

            List<string> L = new List<string>();

            for(long i=1;i<=n;i++){

            if(Heteromecic(i)!=(false, -1)){

                long j=Heteromecic(i).Item2;

                long t =j+1;

                L.Add(i+ " is heteromecic and is the product of "+j+"*"+t);

            }

            else{

                L.Add(i+ " isnt heteromecic");

            }

            }

            return L;

        }

    }

}

​

​