using System;

public class Program

{

    public static void Main()

    {

        var localZone= TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time");

        var hours=Math.Abs(localZone.BaseUtcOffset.Hours);

        var minutes=      localZone.BaseUtcOffset.Minutes.ToString("00");

        var prefix=(localZone.BaseUtcOffset >= TimeSpan.Zero) ? "-" : "+";

        Console.WriteLine($"{prefix}{hours}:{minutes}");

    }

}