using System;
    
    class IdealanPrecnik {
      static void Main() {
        double d;
        
        Console.Write("Unesi precnik cevi -> ");
        d = double.Parse(Console.ReadLine());
        if(Math.Abs(d - 60.0) <= 1.25) {
          Console.WriteLine("Cev odgovara standardu");
        }
        else {
          Console.WriteLine("Cev NE ODGOVARA standardu");
        }
      }
    }