练20.4 判断点在第几象限

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	初二350王晨然	50ms	512 KiB	C++98	251 Bytes	2026-4-8 15:21:35
AC	初二352凃洋	52ms	516 KiB	C++98	290 Bytes	2026-3-31 15:28:26
AC	long	704ms	3.9 MiB	Python 3	155 Bytes	2026-3-28 19:33:40
AC	初二352谭凯中	735ms	3.9 MiB	Python 3	187 Bytes	2026-4-7 14:47:48
AC	初二352李银河	737ms	4 MiB	Python 3	164 Bytes	2026-4-7 14:47:13