using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        int token = 42;

        string bp = "file.cs:43";

        Console.WriteLine((new StringBuilder()).AppendFormat("{0} -break-insert -f {1}", token, bp));

        Console.WriteLine(String.Format("{0} -break-insert -f {1}", token, bp));

    }

}