using System;

​

public class Program

{

    public static void Main()

    {

        //4

        Console.WriteLine("i love you");

        Console.WriteLine("continue?");

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

        while (c == 1)

        {

            Console.WriteLine("i love you");

            Console.WriteLine("continue?");

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

        }

Console.WriteLine("finish");

        //5

​

        //7

        int hours, counter = 0;

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

        while (hours <= 70)

        {

            if (hours >= 15)

                counter++;

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

        }

​

        Console.WriteLine("students:" + counter);

    }

}