QOJ - QOJ.ac

#	имя пользователя	Девиз	Задачи
/	Qingyu		5901
1	larryzhong		943
2	xiaowuc1	you're a half a world away, but in my mind I whisper every single word you say	519
3	MaMengQi		465
4	ZhaoZiLong		464
5	HuangHanSheng		443
6	ZhangYiDe		442
7	GuanYunchang		438
8	flower	qingyu txdy!	335
9	hydd	Qingyu txdy $\\$ $\text{If my armor breaks, I'll fuse it back together}$	312
10	Crysfly	$$f(x)=(\sum_{i=0}^{n-1}\frac{y_i}{(x-q^i)\prod_{j\ne i}(q^i-q^j)})\prod_{i=0}^{n-1}(x-q^i)$$	257
11	tricyzhkx		230
12	chenshi		216
13	zhouhuanyi		199
14	maspy		193
15	Wu_Ren		189
16	He_Ren		184
17	repoman	$$\prod_{i=0}^{n-1} (1+q^iz) = \sum_{i=0}^n q^{i(i-1)/2}\binom ni_q z^i$$	176
18	qwq	$\displaystyle \sum_{i=1}^n [i,i+1,\cdots, i+k] \pmod{10^9+7}$	170
19	alpha1022	$$\frac{1}{n_1!n_2!}(1-y)^{n_1+n_2+2} \left(\sum_{j\ge 0} y^j(t+j)^{n_1} \right) \left(\sum_{j\ge 0} y^j((j+1)-t)^{n_2} \right)$$	163
20	ckiseki		161
21	feecle6418	gyh ak ioi	160