QOJ.ac

QOJ

#	Username	Motto	Solved
1	hos_lyric	$$\left[\frac{x^n}{n!} q^{K-1}\right] \frac{(\mathrm{e}^{rx} - 1) (q + r + \mathrm{e}^{rx} + q \mathrm{e}^{rx} - r \mathrm{e}^{rx} + 1)}{(q + 1) (r - \mathrm{e}^{2rx} + r \mathrm{e}^{2rx} + 1)}$$	1077
2	larryzhong		983
3	ucup-team1005	大家好，我是 C++ 高手，今天来点大家想看的东西。$$ \begin{aligned} &\texttt{sort(Ring.begin(), Ring.end());} \\ &\texttt{sort(Chain.begin(), Chain.begin(), [](int x, int y) \{return x > y;\});} \end{aligned}$$	758
4	PetroTarnavskyi	Why haven't you registered at https://algotester.com/en yet? 🤨	714
5	zhouhuanyi		623
6	Crysfly	加训	610
7	ckiseki	卷不动了	609
8	ucup-team2335		563
9	PhantomThreshold		559
10	xiaowuc1	you're a half a world away, but in my mind I whisper every single word you say	532
11	dXqwq	To the cosmic	524
12	lmq26052003		515
13	grass8cow		505
14	SolitaryDream		462
15	ucup-team1209	我不是可爱小青鱼	442
16	ucup-team087		438
17	ucup-team1198		431
18	ucup-team004		427
19	LoverInTime	089年的树剖	401
20	ucup-team2880		397
21	flower		378
22	275307894a		369
23	maspy	Universal Cup Upsol部	366
24	qiuzx		362
25	ucup-team1878		354
26	ucup-team052		335
27	MoRanSky	无论过去不问将来	333
28	hyforces	永远不够	328
29	Kevin5307	$$ \frac{1}{1-x}\sum_{k=1}^\infty\frac{x^k}{1-\frac{x-x^{k+1}}{1-x}} $$	327
30	ucup-team1004	方队akioi	317
31	lmeowdn		311
32	hydd	Qingyu txdy $\\$ If my armor breaks, I'll fuse it back together	310
32	ucup-team987		310
32	waifuSenpai		310
35	ucup-team864		309
36	ucup-team191		302
37	Lynkcat		298
38	ucup-team159		295
39	Sorting	ㅗ오ㅗ	293
40	ucup-team266		288
41	james1BadCreeper	他明白他明白我给不起	287
42	alpha1022	$$\frac{1}{n_1!n_2!}(1-y)^{n_1+n_2+2} \left(\sum_{j\ge 0} y^j(t+j)^{n_1} \right) \left(\sum_{j\ge 0} y^j((j+1)-t)^{n_2} \right)$$	286
43	znstz		277
44	ucup-team1134		276
45	ucup-team133		274
46	AFewSuns	$\displaystyle\sum_{n \geq 0}{(x+y)^n\frac{u^n}{n!}}=\sum_{k \geq 0}\frac{x}{x-kz}(x-kz)^k\frac{u^k}{k!}\sum_{l \geq 0}\frac{(y+kz)^l}{l!}u^l$	269
47	bachbeo2007		266
47	ezteam1		266
49	ucup-team1447	没队要	263
50	ucup-team253		259
51	ucup-team138		252
51	zhaohaikun		252
53	tricyzhkx		249
54	ucup-team130		246
55	ucup-team267	哈姆。	242
56	iee		239
56	ucup-team112		239
58	sdoi	$$P_{a_i}(x) = [t^{a_i}]\frac{1}{1-xF(t)}$$	237
58	ucup-team025		237
60	He_Ren		236
60	ucup-team134		236
62	KKT89		233
63	ucup-team122		229
64	ucup-team180		226
65	8BQube		222
65	ucup-team216		222
67	chenshi		218
68	karuna		217
69	repoman	$$\prod_{i=0}^{n-1} (1+q^iz) = \sum_{i=0}^n q^{i(i-1)/2}\binom ni_q z^i$$	215
69	ushg8877		215
71	ucup-team1293		214
71	ucup-team870		214
73	zhoukangyang		213
74	ucup-team228		212
75	ucup-team1525		209
76	ucup-team3215		206
77	do_while_true		204
78	new_dawn_2		203
79	ucup-team123		202
79	ucup-team244		202
81	kevinyang		201
82	qwq	$\displaystyle \sum_{i=1}^n [i,i+1,\cdots, i+k] \pmod{10^9+7}$	199
82	ship2077		199
82	ucup-team1126		199
85	ucup-team029		197
86	ucup-team1191		196
87	Wu_Ren		194
88	JohnAlfnov	Qingyu Kedavra !	193
89	ucup-team2307		192
90	ucup-team311		191
91	_map_	map<problem_statement,vector<pair<oj,problem_id>>>	190
92	ucup-team026		188
92	ucup-team045		188
92	ucup-team1055		188
95	DitaMirika		184
95	myee	与其诺诺以顺，不若谔谔以昌	184
97	ucup-team1123		183
98	chenxinyang2006		179
99	bulijiojiodibuliduo		178
99	monstersqwq		178