using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("How many guns do Americans own");

            String x = Console.ReadLine();

        int points = 0;

        if (x == "270 million"){

            Console.WriteLine("correct");

            points = points + 1;

        }

        else {

            Console.WriteLine("incorrect");

        }

        Console.WriteLine("what % of gun owners own most of the guns");

        x = Console.ReadLine();

        if (x == "20%"){

            Console.WriteLine("correct");

            points = points + 1;

        }

        else {

            Console.WriteLine("incorrect");

        }

        Console.WriteLine("about how many joules of enrgy is in 1 grain of gunpowder");

        x = Console.ReadLine();

        if (x == "89"){

            Console.WriteLine("correct");

            points = points + 1;

        }

        else {

            Console.WriteLine("incorrect");

        }

        Console.WriteLine("can firing your gun in the air be lethel");

        x = Console.ReadLine();

        if (x == "yes"){

            Console.WriteLine("correct");

            points = points + 1;

        }

        else {

            Console.WriteLine("incorrect");

        }

        Console.WriteLine("You got " + points + " out of 4");

    }

}