输出保留3位小数的浮点数

状态	递交者	时间	内存	语言	代码	递交时间
AC	赵沛喆	6ms	320 KiB		119 Bytes	2022-5-12 22:01:12
AC	汪致卉 (wangzh)	7ms	256 KiB		92 Bytes	2022-2-27 14:55:19
AC	肖添宇	7ms	384 KiB		138 Bytes	2022-4-23 17:25:00
AC	1396013295	7ms	316 KiB		119 Bytes	2022-3-4 18:27:12
AC	杨坤霖 (steven)	9ms	384 KiB		105 Bytes	2023-1-19 16:46:36
AC	诸禹吉 (zhuyuji)	13ms	384 KiB		189 Bytes	2022-5-14 15:57:42
AC	林小博	13ms	392 KiB		147 Bytes	2022-5-19 21:11:15
AC	11111	13ms	384 KiB		128 Bytes	2022-3-13 11:28:49
AC	草\|\|草 (陈星佑)	13ms	384 KiB		131 Bytes	2022-6-1 11:13:02
AC	杜俊宏	13ms	424 KiB		129 Bytes	2022-6-9 19:08:58
AC	李树崑 (lishukun)	13ms	512 KiB		155 Bytes	2022-8-5 15:09:44
AC	杨淇瑞 (杨淇瑞29)	13ms	7.2 MiB	C++98	122 Bytes	2024-5-15 20:40:17
AC	草\|\|草 (陈星佑)	13ms	512 KiB		131 Bytes	2022-6-1 11:13:03
AC	Randy Marsh (杨子腾)	13ms	392 KiB		129 Bytes	2022-6-12 18:51:49
AC	坤坤荔枝小黑子 (zhonghaotian22006)	13ms	392 KiB		123 Bytes	2022-7-4 10:16:12
AC	高致远 (GZY)	13ms	392 KiB		143 Bytes	2022-3-12 9:00:06
AC	赵泳鑫 (zhaoyongxin)	13ms	512 KiB		122 Bytes	2022-4-28 6:55:25
AC	xiangsiyu	13ms	512 KiB		178 Bytes	2022-7-3 22:05:47
AC	樊竣熠 (lft1114)	14ms	384 KiB		140 Bytes	2022-3-1 18:32:59
AC	huyinuo	14ms	440 KiB		117 Bytes	2022-5-31 22:18:47
AC	草\|\|草 (陈星佑)	14ms	384 KiB		131 Bytes	2022-6-1 11:13:01
AC	何锦宸熙	14ms	7.2 MiB	C++98	116 Bytes	2024-4-27 13:42:05
AC	胡澜之 (666hlz666)	14ms	6.9 MiB	C++11	116 Bytes	2024-8-17 10:05:13
AC	张瑞博	14ms	7.1 MiB	C++11	115 Bytes	2024-4-20 23:33:35
AC	赵鑫宸 (xiaoxiao721)	14ms	512 KiB		142 Bytes	2022-3-12 16:54:08
AC	RanHao	14ms	6.8 MiB		195 Bytes	2023-10-3 22:18:49
AC	TBB (杜昊燃)	14ms	440 KiB		126 Bytes	2022-4-9 23:06:51
AC	Tang	14ms	424 KiB		121 Bytes	2022-3-9 20:04:59
AC	我推忘归人 (贺俊楠)	14ms	7 MiB	C++98	153 Bytes	2024-5-5 11:34:02
AC	LUKHE (LukeHu)	14ms	448 KiB		199 Bytes	2022-4-16 17:06:02
AC	江子墨	14ms	7 MiB	C++98	119 Bytes	2024-6-27 10:04:57
AC	罗伟杰 (13308275065)	14ms	424 KiB		120 Bytes	2022-11-30 22:22:08
AC	Guest	14ms	6.8 MiB	C++20	128 Bytes	2024-8-9 18:51:45
AC	姚宏逸	14ms	384 KiB		175 Bytes	2022-3-1 17:09:38
AC	ywh	14ms	440 KiB		135 Bytes	2022-6-25 13:51:49
AC	zhanghaoran	14ms	384 KiB		122 Bytes	2022-3-9 20:12:12
AC	周琪渃	14ms	432 KiB		120 Bytes	2023-3-5 12:22:41
AC	邹曜丞 (13983097018)	14ms	6.9 MiB		122 Bytes	2023-7-12 19:05:42
AC	MoonLight ( aaa)	14ms	436 KiB		127 Bytes	2022-8-11 10:55:59
AC	曹埊睿 (caodirui)	14ms	420 KiB		118 Bytes	2023-3-24 23:02:31
AC	leisixian (22029-lyh)	15ms	444 KiB		123 Bytes	2022-12-3 10:00:52
AC	疯神芭芭脱丝 (李卓修)	15ms	436 KiB		122 Bytes	2022-7-12 11:43:37
AC	源著校区-宋昊成 (马冬梅)	15ms	440 KiB		108 Bytes	2023-2-26 19:50:19
AC	colin1112 (墙凌可)	15ms	6.7 MiB		195 Bytes	2023-9-7 19:08:43
AC	罗翌珂 (dangdang)	15ms	436 KiB		127 Bytes	2022-9-30 17:32:02
AC	dmh (丁墨涵)	15ms	444 KiB		118 Bytes	2022-3-26 14:41:24
AC	希蒙 (zhengxingya)	15ms	6.8 MiB		208 Bytes	2023-10-18 17:18:34
AC	王祎辰 (wangyichen)	16ms	420 KiB		123 Bytes	2023-3-26 21:17:50
AC	杜是贤 (dushixian)	16ms	428 KiB		129 Bytes	2023-5-28 10:47:20
AC	李彭宋代诗人 (ljy123456)	16ms	512 KiB		123 Bytes	2023-4-6 16:17:06
AC	王晨志 (wangchenzhi)	16ms	444 KiB		340 Bytes	2022-7-22 15:03:04
AC	yangbinyu	16ms	432 KiB		146 Bytes	2022-10-18 10:04:34
AC	zlx (xiao)	16ms	436 KiB		140 Bytes	2022-11-26 21:23:13
AC	廖海宇在追杀马牌痞 (liaohaiyu22031)	16ms	512 KiB		122 Bytes	2022-11-25 11:52:28
AC	新壹街校区-杨轩懿 (杨轩懿1)	16ms	6.9 MiB		103 Bytes	2023-7-24 13:53:59
AC	马渝杭 (mayuhang)	16ms	436 KiB		116 Bytes	2023-3-6 19:19:13
AC	朱泽晟	16ms	436 KiB		96 Bytes	2022-12-10 22:23:38
AC	11111	16ms	444 KiB		128 Bytes	2022-3-13 11:28:49
AC	金沙校区-蓝祥与 (蓝祥与)	17ms	6.9 MiB		117 Bytes	2023-8-10 17:21:56
AC	Error404sans (焦阳浩云)	17ms	6.9 MiB		116 Bytes	2023-7-12 19:05:04
AC	孙烽轶 (sfy)	17ms	436 KiB		115 Bytes	2022-10-27 16:37:59
AC	手搓STL stack 双向无环链表 _ 向量 2种实现方式: template <typename Map_Type> class Stack_l /* Stack _ List / { private: struct Node { Map_Type Node_Data; Node nextp, lastp; Node(void) { nextp = 0; lastp = 0; } }; struct List_Data { unsigned int List_Size; Node headp, endp; List_Data(void) { List_Size = 0; headp = 0; endp = 0; } }Data; struct Vector_Data { Map_Type headp, lastp, endp; void resize(unsigned int data_size) { Map_Type newp = new Map_Type[data_size](); endp = newp + data_size - 1; lastp = newp + (data_size > lastp - headp ? lastp - headp : data_size); if (headp) delete[] headp; headp = newp; } Vector_Data(void) { headp = 0; lastp = 0; endp = 0; } }; public: unsigned int size(void) { return Data.List_Size; } Map_Type& top(void) { return Data.endp -> Node_Data; } void data(void) { return &Data; } bool empty(void) { return !((bool)Data.headp); } Stack_l<Map_Type>& push(Map_Type push_data) { Node nodep = new Node(); nodep -> lastp = Data.endp; if (!Data.headp) { Data.headp = nodep; Data.endp = nodep; } else Data.endp -> nextp = nodep; Data.endp = nodep; nodep -> Node_Data = push_data; ++Data.List_Size; return this; } Stack_l<Map_Type>& push(Map_Type& push_data) { Node nodep = new Node(); nodep -> lastp = Data.endp; if (!Data.headp) { Data.headp = nodep; Data.endp = nodep; } else Data.endp -> nextp = nodep; Data.endp = nodep; nodep -> Node_Data = push_data; ++Data.List_Size; return this; } Stack_l<Map_Type>& push(Map_Type* push_data) { Node nodep = new Node(); nodep -> lastp = Data.endp; if (!Data.headp) { Data.headp = nodep; Data.endp = nodep; } else Data.endp -> nextp = nodep; Data.endp = nodep; nodep -> Node_Data = push_data; ++Data.List_Size; return this; } Stack_l<Map_Type>& push(const Map_Type push_data) { Node nodep = new Node(); nodep -> lastp = Data.endp; if (!Data.headp) { Data.headp = nodep; Data.endp = nodep; } else Data.endp -> nextp = nodep; Data.endp = nodep; nodep -> Node_Data = (Map_Type)push_data; ++Data.List_Size; return this; } Stack_l<Map_Type>& pop(void) { if (Data.headp) { if (Data.List_Size == 1u) { delete Data.headp; Data.List_Size = 0; Data.headp = 0; Data.endp = 0; } else { Data.endp = Data.endp -> lastp; delete Data.endp -> nextp; Data.endp -> nextp = 0; --Data.List_Size; } } return this; } Stack_l<Map_Type>& clear(void) { while (Data.List_Size) { pop(); } return this; } Stack_l<Map_Type>(void) { /* NULL / } Stack_l<Map_Type>(unsigned int data_size, Map_Type map_data) { Data.List_Size = data_size; while (data_size--) { Node nodep = new Node(); nodep -> Node_Data = map_data; if (Data.headp) { nodep -> lastp = Data.endp; Data.endp -> nextp = nodep; Data.endp = nodep; } else { Data.headp = nodep; Data.endp = nodep; } } } Stack_l<Map_Type>(Stack_l<Map_Type>& map_data) { if (!map_data.empty()) { List_Data listp = (List_Data)map_data.data(); Node nodep = listp -> headp, newp; for (unsigned int i = 0; i != listp -> List_Size; ++i, nodep = nodep -> nextp) { newp = new Node(); newp -> Node_Data = nodep -> Node_Data; if (Data.headp) { newp -> lastp = Data.endp; Data.endp -> nextp = newp; Data.endp = newp; } else { Data.headp = newp; Data.endp = newp; } } Data.List_Size = listp -> List_Size; } } Stack_l<Map_Type>& operator=(Stack_l<Map_Type>& copy_data) { if (copy_data.empty()) return this; List_Data listp = (List_Data)copy_data.data(); Node nodep = listp -> headp, newp; for (unsigned int i = 0; i != listp -> List_Size; ++i, nodep = nodep -> nextp) { newp = new Node(); newp -> Node_Data = nodep -> Node_Data; if (Data.headp) { newp -> lastp = Data.endp; Data.endp -> nextp = newp; Data.endp = newp; } else { Data.headp = newp; Data.endp = newp; } } Data.List_Size = listp -> List_Size; return this; } bool operator==(Stack_l<Map_Type>& cmp_data) { if (cmp_data.size() != Data.List_Size) return false; else if (cmp_data.empty() && (!Data.List_Size)) return true; Node nodep1 = Data.headp, nodep2 = ((List_Data)cmp_data.data()) ->headp; for (unsigned int i = 0; i != Data.List_Size; ++i, nodep1 = nodep1 -> nextp, nodep2 = nodep2 ->nextp) { if (nodep1 -> Node_Data != nodep2 -> Node_Data) return false; } return true; } bool operator!=(Stack_l<Map_Type>& cmp_data) { if (cmp_data.size() == Data.List_Size) return false; else if (cmp_data.empty() && (!Data.List_Size)) return false; Node nodep1 = Data.headp, nodep2 = ((List_Data)cmp_data.data()) ->headp; for (unsigned int i = 0; i != Data.List_Size; ++i, nodep1 = nodep1 -> nextp, nodep2 = nodep2 ->nextp) { if (nodep1 -> Node_Data != nodep2 -> Node_Data) return true; } return true; } ~Stack_l<Map_Type>(void) { clear(); } }; /* Stack _ List / template <typename Map_Type> class Stack_v / Stack _ Vector / { private: struct Node { Map_Type Node_Data; Node nextp, lastp; Node(void) { nextp = 0; lastp = 0; } }; struct List_Data { unsigned int List_Size; Node headp, endp; List_Data(void) { List_Size = 0; headp = 0; endp = 0; } }; struct Vector_Data { Map_Type headp, lastp, endp; void resize(unsigned int data_size) { Map_Type newp = new Map_Type[data_size](); endp = newp + data_size - 1; lastp = newp + (data_size > lastp - headp ? lastp - headp : data_size); if (headp) delete[] headp; headp = newp; } Vector_Data(void) { headp = 0; lastp = 0; endp = 0; } }Data; public: unsigned int size(void) { return Data.lastp - Data.headp; } Map_Type& top(void) { return (Data.lastp - 1); } void* data(void) { return &Data; } bool full(void) { if (!Data.headp) return true; return Data.endp + 1 == Data.lastp; } bool empty(void) { if (!Data.headp) return true; return Data.headp == Data.lastp; } Stack_v<Map_Type>& push(Map_Type push_data) { if (full()) Data.resize((unsigned int)((Data.lastp - Data.headp) * 1.5) + 1); Data.lastp = push_data; ++Data.lastp; return this; } Stack_v<Map_Type>& push(Map_Type& push_data) { if (full()) Data.resize((unsigned int)((Data.lastp - Data.headp) * 1.5) + 1); Data.lastp = push_data; ++Data.lastp; return this; } Stack_v<Map_Type>& push(Map_Type* push_data) { if (full()) Data.resize((unsigned int)((Data.lastp - Data.headp) * 1.5) + 1); Data.lastp = push_data; ++Data.lastp; return this; } Stack_v<Map_Type>& push(const Map_Type push_data) { if (full()) Data.resize((unsigned int)((Data.lastp - Data.headp) * 1.5) + 1); Data.lastp = (Map_Type)push_data; ++Data.lastp; return this; } Stack_v<Map_Type>& pop(void) { if (empty()) { if (Data.lastp - Data.headp > 1) Data.resize((Data.lastp - Data.headp) >> 1); else return this; } else --Data.lastp; return this; } Stack_v<Map_Type>(void) { /* NULL / } Stack_v<Map_Type>(unsigned int data_size, Map_Type map_data) { while (data_size) { push(&map_data); --data_size; } } Stack_v<Map_Type>(Stack_v<Map_Type>& map_data) { Vector_Data datap = (Vector_Data)map_data.data(); for (unsigned int i = 0, k = map_data.size(); i != k; ++i) push(datap -> headp + i); } Stack_v<Map_Type>& operator=(Stack_v<Map_Type>& copy_data) { if (copy_data.empty()) clear(); else { Vector_Data datap = (Vector_Data)copy_data.data(); for (unsigned int i = 0, k = copy_data.size(); i != k; ++i) push(datap -> headp + i); } return this; } bool operator==(Stack_v<Map_Type>& cmp_data) { if (size() != cmp_data.size()) return false; else if (empty() && cmp_data.empty()) return true; Vector_Data datap = (Vector_Data)cmp_data.data(); for (unsigned int i = 0, k = size(); i != k; ++i) { if ((Data.headp + i) != (datap ->headp + i)) return false; } return true; } bool operator!=(Stack_v<Map_Type>& cmp_data) { if (size() != cmp_data.size()) return true; else if (empty() && cmp_data.empty()) return false; Vector_Data datap = (Vector_Data)cmp_data.data(); for (unsigned int i = 0, k = size(); i != k; ++i) { if ((Data.headp + i) != (datap -> headp + i)) return true; } return false; } Stack_v<Map_Type>& clear(void) { delete[] Data.headp; Data.headp = 0; Data.lastp = 0; Data.endp = 0; return this; } ~Stack_v<Map_Type>(void) { delete[] Data.headp; } }; / Stack _ Vector */ int main(void) { return 0; } (22029-xys)	18ms	6.9 MiB		110 Bytes	2023-8-9 17:14:00
AC	李廷旭 (litingxu)	18ms	8.1 MiB		162 Bytes	2023-8-23 18:08:26
AC	ysf.wlanwq.ZJSWL 1922~1991 (韦舒豪)	23ms	6.8 MiB		181 Bytes	2023-12-2 9:18:47
AC	jiangzhenghan	66ms	764 KiB		116 Bytes	2024-4-2 19:17:18
AC	Zongzi1	67ms	536 KiB	C++17(O2)	129 Bytes	2025-2-10 17:46:16
AC	没有此人 (akm)	67ms	764 KiB		122 Bytes	2024-3-13 22:06:00
AC	cainuoyan	70ms	536 KiB		104 Bytes	2024-3-9 15:41:56
AC	时代一校-赵彦博 (zyb)	70ms	768 KiB		142 Bytes	2024-3-14 21:18:32
AC	uiuy (李潇睿666)	76ms	764 KiB	C++20(O2)	241 Bytes	2025-3-26 13:22:17
AC	xsm梁家畅	77ms	768 KiB	C++98(O2)	123 Bytes	2025-1-19 18:54:22
AC	xsm谢吉童	77ms	768 KiB	C++98(O2)	136 Bytes	2025-2-25 20:47:47
AC	majinhui	197ms	4 MiB	Python 3	33 Bytes	2022-8-6 15:18:00
AC	梨冻亿 (wiueh)	208ms	3.9 MiB	Python 3	284 Bytes	2022-4-4 10:07:01
AC	爱琴海校区-刁钲洋 (刁钲洋)	212ms	4 MiB	Python 3	32 Bytes	2022-3-12 12:16:26
AC	火爆肥肠（杨弘毅） (火爆肥肠)	226ms	3.9 MiB	Python 3	33 Bytes	2022-2-27 11:56:10
AC	奶龙 (hterberjh4ewjn54hgbh4)	653ms	4 MiB	Python 3	99 Bytes	2025-3-26 17:18:17