using System;

public class Program

{

    public static void Main()

    {

        //row between 0 and 50

        int x = 0;

        while(x<51){

            Console.WriteLine(x);

            x++; // x = x+1

        }

        Console.WriteLine("The cicle is finished");

        //display numbers from A to B

        int number1;

        Console.WriteLine("Insert number1:");

        string input = Console.ReadLine();

        Int32.TryParse(input, out number1);

        int number2;

        Console.WriteLine("Insert number2:");

        string input1 = Console.ReadLine();

        Int32.TryParse(input1, out number2);

        int i=number1;

        for (i=number1; i<number2; i++){

            Console.WriteLine(i);

        }

        Console.WriteLine("END");

        //sum of numbers in the interval

        int number3;

        Console.WriteLine("Insert number3:");

        string input2 = Console.ReadLine();

        Int32.TryParse(input2, out number3);

        int number4;

        Console.WriteLine("Insert number4:");

        string input3 = Console.ReadLine();

        Int32.TryParse(input3, out number4);

        int sum=0;

        for(i=number3;i<number4;i++){

            sum+=i;

        }

        Console.WriteLine("The sum is:" +sum);

        //lowest number dividable by 7 and remainder by 4, 5, 6 equal to 1

        //prime numbers in the interval

        /*int number7;

        Console.WriteLine("Insert number7:");

        string input6 = Console.ReadLine();

        Int32.TryParse(input6, out number7);

        int number8;

        Console.WriteLine("Insert number8:");

        string input7 = Console.ReadLine();

        Int32.TryParse(input7, out number8);

        for(i=number7;i<number8;i++){

            Console.WriteLine(i);

        }

        Console.WriteLine("END");   

        int number9 = 0;

        for(i=2;i<number9-1;i++){

            Console.WriteLine(number9/i);

        }

        Console.WriteLine("END");*/

        int number7; 

        Console.WriteLine("Enter number7:");

        string input6 = Console.ReadLine();

        Int32.TryParse(input6, out number7);

        int number8;

        Console.WriteLine("Enter number8:");

        string input7 = Console.ReadLine();

        Int32.TryParse(input7, out number8);

        range(number7, number8 + 1);  

       if num > 1:  

           for i in range(2,num):  

               if (num % i) == 0:  

                   break  

           else:  

               print(num)  

    }

}