using System;

public class Program

{

    public static void Main()

    {

        int ind= 0;

        int corona;

        int y= 0;

        Console.Write(" enter the number of sick corona people");

        corona = int.Parse(Console.ReadLine());

        while(corona>1000)

        {

            ind++;

            y = y + corona;

            corona = int.Parse(Console.ReadLine());

        }

            Console.WriteLine("  the number of sick corona people is:"+ corona);

        Console.WriteLine(" its happened in:""days");

    }

}