private static async Task FindPathsAsync(long id1, long id2)
{
#if !ALLOW_CACHE
var analyzer = new Analyzer(client);
#endif
Console.WriteLine("请稍后……");
var sw = Stopwatch.StartNew();
var paths = await analyzer.FindPathsAsync(id1, id2);
sw.Stop();
Console.WriteLine("找到 {0} 条路径，用时 {1} 。", paths.Count, sw.Elapsed);
foreach (var g in paths.ToLookup(p => p.Length).OrderBy(g1 => g1.Key))
{
Console.WriteLine("{0}-hop：{1} 条。", g.Key - 1, g.Count());
}
Console.WriteLine(client.DumpStatistics());
Console.WriteLine(analyzer.DumpStatistics());
//Console.WriteLine(analyzer.DumpAlphabet());
#if !ALLOW_CACHE
//analyzer.Dispose();
#endif
}
