using System;

public class Program

{

    public static void Main()

    {

        int n1, sum;

Console.WriteLine("Insert first number: "); 

n1= int.Parse(Console.ReadLine());

Console.Write("Insert second number: ");

int n2= int.Parse(Console.ReadLine()); 

    sum = n1 + n2;

    Console.Write("n1 + n2 = ");

Console.WriteLine(sum);

    Console.WriteLine("n1 + n2 = {0}", sum);

Console. WriteLine("{0} + {1} = {2}", n1, n2,sum);

}

}