树套树：

Time:23.53s

Memory:72.50MB

Length:2.80KB

调试时间：2h~3h (?

整体二分（未离散化）：

Time:2.16s

Memory:22.84MB

Length:1.83KB

调试时间：0.5h

草绷不住了

虽然树套树扩展性++