using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("This program was made by Group 1 of 9B to assist you by displaying the level of health concern when given the AQI");

        int aqi;

        Console.WriteLine("Enter the AQI of the area:");

        aqi = Convert.ToInt32(Console.ReadLine());

        if (aqi >= 301)

        {

            Console.WriteLine("Your air quality is hazardous.");

        }

        else if (aqi >= 201)

        {

            Console.WriteLine("Your air quality is very unhealthy.");

        }

        else if (aqi >= 151)

        {

            Console.WriteLine("Your air quality is unhealthy.");

        }

        else if (aqi >= 101)

        {

            Console.WriteLine("Your air quality is unhealthy for sensitive groups.");

        }

        else if (aqi >= 51)

        {

            Console.WriteLine("Your air quality is moderate.");

        }

        else if (aqi >= 0)

        {

            Console.WriteLine("Your air quality is good."); 

        }

        else {Console.WriteLine ("Negative numbers are not allowed to be entered");}

        Console.WriteLine("Make sure to stay safe & avoid using items with harmful components that can affect the air quality! Together we can make change!");

    }

}