【例16.1】判断数正负

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	徐靖程 (lfyst2025030)	25ms	756 KiB	C++14(O2)	169 Bytes	2025-5-30 17:56:22
AC	王钰凯 (lfyst2025022)	25ms	508 KiB	C++14(O2)	163 Bytes	2025-4-16 17:33:02
AC	司明睿 (lqst2581)	25ms	516 KiB	C++14(O2)	209 Bytes	2026-6-3 17:07:53
AC	王浩泽 (zdqz202577)	26ms	508 KiB	C++14(O2)	170 Bytes	2025-12-16 16:49:39
AC	fish (lfy48)	26ms	504 KiB	C++14(O2)	262 Bytes	2025-4-9 20:31:04
AC	唐新春 (lqst2519)	26ms	768 KiB	C++14(O2)	177 Bytes	2026-6-3 17:15:17
AC	李阳 (lqst2554)	26ms	512 KiB	C++14(O2)	207 Bytes	2026-6-3 17:09:34
AC	刘相喆 (lqst2507)	26ms	768 KiB	C++14(O2)	181 Bytes	2026-4-15 17:06:11
AC	杜懿轩 (zdqz202575)	27ms	760 KiB	C++14(O2)	170 Bytes	2025-12-15 16:56:36
AC	冯秋泽 (lqst26022)	27ms	540 KiB	C++14(O2)	172 Bytes	2026-6-3 17:15:57
AC	张如莹 (lqst2592)	27ms	768 KiB	C++14(O2)	201 Bytes	2026-6-3 17:16:29
AC	刘思远 (lfyst2025012)	27ms	760 KiB	C++14(O2)	188 Bytes	2025-4-16 18:12:00
AC	卢照林 (lqst26024)	27ms	524 KiB	C++14(O2)	256 Bytes	2026-6-3 17:24:48
AC	郝伟丞 (lqst2602)	27ms	536 KiB	C++14(O2)	164 Bytes	2026-6-3 17:20:31
AC	王岳轩 (lqst26017)	27ms	516 KiB	C++14(O2)	164 Bytes	2026-6-3 17:26:41
AC	黄桐妤 (lqst2596)	27ms	768 KiB	C++14(O2)	170 Bytes	2026-6-3 17:15:15
AC	卢嘉睿 (lqst2567)	28ms	768 KiB	C++14(O2)	182 Bytes	2026-6-3 17:29:35
AC	史高睿 (lqst2515)	28ms	540 KiB	C++14(O2)	164 Bytes	2026-6-3 17:15:44
AC	史子川 (lqst2025049)	28ms	772 KiB	C++14(O2)	172 Bytes	2026-6-3 17:05:17
AC	王军龙 (lqst2525)	28ms	756 KiB	C++14(O2)	203 Bytes	2026-6-3 17:24:47
AC	刘梓辰 (lqst2597)	29ms	568 KiB	C++14(O2)	254 Bytes	2026-6-3 17:12:04