练20.4 判断点在第几象限

状态	递交者	时间	内存	语言	代码	递交时间
AC	UID 24	46ms	544 KiB	C++20(O2)	265 Bytes	2026-7-23 16:45:18
AC	UID 299	50ms	764 KiB	C++20(O2)	249 Bytes	2026-7-23 16:40:37
AC	UID 298	51ms	768 KiB	C++20(O2)	237 Bytes	2026-7-23 17:09:38
AC	UID 26	52ms	524 KiB	C++98	216 Bytes	2025-11-23 11:04:11
AC	许铖晟	52ms	504 KiB	C++98	271 Bytes	2025-7-16 13:14:07
AC	李屹则	52ms	508 KiB	C++98	334 Bytes	2025-12-5 12:53:21
AC	wyh	54ms	764 KiB	C++98	208 Bytes	2025-7-19 13:50:52