using System;
using System.IO;
using System.IO.Compression;

public static class GZipUtility
{
	public static string CompressString(string input)
	{
		byte[] inputBytes = System.Text.Encoding.UTF8.GetBytes(input);
		using (MemoryStream outputStream = new MemoryStream())
		{
			using (GZipStream gzipStream = new GZipStream(outputStream, CompressionMode.Compress))
			{
				gzipStream.Write(inputBytes, 0, inputBytes.Length);
			}
			return Convert.ToBase64String(outputStream.ToArray());
		}
	}

	public static string DecompressString(string compressedInput)
	{
		byte[] compressedBytes = Convert.FromBase64String(compressedInput);
		using (MemoryStream inputStream = new MemoryStream(compressedBytes))
		{
			using (GZipStream gzipStream = new GZipStream(inputStream, CompressionMode.Decompress))
			{
				using (MemoryStream outputStream = new MemoryStream())
				{
					gzipStream.CopyTo(outputStream);
					byte[] decompressedBytes = outputStream.ToArray();
					return System.Text.Encoding.UTF8.GetString(decompressedBytes);
				}
			}
		}
	}
}