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- using System;
- namespace TelerikTests
- {
- class Program
- {
- static void Main(string[] args)
- {
- int N = int.Parse(Console.ReadLine());
- for (int i = 1; i <= N; i++)
- {
- if (IsPrime(i))
- {
- PrintRow(i);
- }
- }
- }
- static void PrintRow(int upperLimit)
- {
- Console.WriteLine();
- for (int i = 1; i <= upperLimit; i++)
- {
- if (IsPrime(i))
- {
- Console.Write(1);
- }
- else
- {
- Console.Write(0);
- }
- }
- }
- public static bool IsPrime(int number)
- {
- if (number == 1) return true;
- if (number <= 1) return false;
- if (number == 2) return true;
- if (number % 2 == 0) return false;
- var boundary = (int)Math.Floor(Math.Sqrt(number));
- for (int i = 3; i <= boundary; i += 2)
- if (number % i == 0)
- return false;
- return true;
- }
- }
- }
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