判断数正负

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	陈国瑞	13ms	820 KiB	C++14(O2)	330 Bytes	2025-7-15 17:21:14
AC	白力予	13ms	808 KiB	C++14(O2)	215 Bytes	2025-8-7 19:20:28
AC	_chjich_	14ms	808 KiB	C++14(O2)	182 Bytes	2025-7-11 9:35:48
AC	曾彦彬contest	14ms	696 KiB	C++14(O2)	238 Bytes	2025-7-7 20:04:16
AC	女乃龙	14ms	816 KiB	C++14(O2)	214 Bytes	2025-7-11 14:51:50
AC	若白	15ms	808 KiB	C++17(O2)	198 Bytes	2025-7-11 15:28:27
AC	maochengjun	15ms	804 KiB	C++14	214 Bytes	2025-7-9 11:46:20
AC	xzh13579	15ms	808 KiB	C++14(O2)	276 Bytes	2025-7-27 17:59:16
AC	刘喻蔓	16ms	836 KiB	C++14(O2)	226 Bytes	2025-8-7 15:43:33
AC	龙肖瑾xly2025	16ms	816 KiB	C++14(O2)	207 Bytes	2025-7-22 21:37:26