using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Arithmetic Problems");

        Console.WriteLine("Calculate the sum of the numbers below. \n");

        // Problem 1

        Console.WriteLine("4 * 3 = ");

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

        if (product == 12)

        {

            Console.WriteLine("The answer is correct! \n");

        }

        else

        {

            Console.WriteLine("Incorrect. Try again next time. \n");

        }

        // Problem 2

        Console.WriteLine("8 + 1 = ");

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

        if (sum == 9)

        {

            Console.WriteLine("The answer is correct! \n");

        }

        else

        {

            Console.WriteLine("Incorrect. Try again next time. \n");

        }

        // Problem 3

        Console.WriteLine("15 - 5 = ");

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

        if (difference == 10)

        {

            Console.WriteLine("The answer is correct! \n");

        }

        else

        {

            Console.WriteLine("Incorrect. Try again next time. \n");

        }

        // Problem 4

        Console.WriteLine("5 + 2 = ");

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

        if (sun == 7)

        {

            Console.WriteLine("The answer is correct! \n");

        }

        else

        {

            Console.WriteLine("Incorrect. Try again next time. \n");

        }

        // Problem 5

        Console.WriteLine("90 + 10 = ");

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

        if (moon == 100)

        {

            Console.WriteLine("The answer is correct! \n");

            Console.WriteLine("count++");

        }

        else

        {

            Console.WriteLine("Incorrect. Try again next time. \n");

        }

    }

}