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  1. using System;
  2.  
  3. namespace Prob2292
  4. {
  5.     class Program
  6.     {
  7.         static void Main(string[] args)
  8.         {
  9.             int n = int.Parse(Console.ReadLine());
  10.  
  11.             int count = 0, a = 1;
  12.             while (true)
  13.             {
  14.                 count++;
  15.                 a += 6 * count;
  16.                 if (n <= a) break;
  17.             }
  18.  
  19.             Console.WriteLine(count);
  20.         }
  21.     }
  22. }
Success #stdin #stdout 0.01s 131520KB
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https://ideone.com/E3wCnP
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
public

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