using System;

public class Program

{

    public static void Main()

    {

        int n, br = 0, sum = 0;

​

Console.WriteLine("Enter the max of interval:");

​

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

for (int i = 1; i < n; i++)

{

    for (int j = 1; j < n; j++)

    {

        if (i % j == 0) br++;

    }

    if (br == 2)

    {

        Console.Write(i + ", ");

        sum = sum + i;

    }

    br = 0;

}

Console.WriteLine("");

Console.WriteLine("The sum of all prime numbers int the given interval is: " + sum);

    }

}