using System;

using System.Diagnostics;

using System.Text;

​

class RageQuit

{

    static void Main()

    {

        Stopwatch chronometer = new Stopwatch();

        string str = "";

​

        chronometer.Start();

​

        for (int i = 0; i < 100000; i++)

        {

            str += "text";

        }

​

        chronometer.Stop();

        Console.WriteLine($"Seconds with string: {chronometer.Elapsed.TotalSeconds}");

        chronometer.Reset();

        Console.WriteLine();

​

        chronometer.Start();

​

        StringBuilder sb = new StringBuilder();

​

        for (int i = 0; i < 100000; i++)

        {

            sb.Append("text");

        }

​

        chronometer.Stop();

        Console.Write($"Seconds with StringBuilder: {chronometer.Elapsed.TotalSeconds}");

        Console.WriteLine();

        Console.WriteLine();

    }

}