练20.4 判断点在第几象限

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	一只小猪狗~~ (lfy57)	44ms	508 KiB	C++14(O2)	227 Bytes	2025-7-21 11:30:53
AC	李承佐 (lqst2025046)	49ms	760 KiB	C++14(O2)	246 Bytes	2025-5-16 17:05:10
AC	徐靖程 (lfyst2025030)	50ms	512 KiB	C++14(O2)	226 Bytes	2025-5-14 18:00:56
AC	孙烨 (lqst2025022)	52ms	508 KiB	C++14(O2)	246 Bytes	2025-12-17 17:45:14
AC	亓景业 (lqst2025025)	52ms	760 KiB	C++14(O2)	242 Bytes	2025-12-17 17:48:15
AC	刘丛睿 (lqst2025013)	55ms	756 KiB	C++14(O2)	246 Bytes	2025-12-3 17:59:20