QOJ - QOJ.ac

#	Username	Motto	Solved
/	Qingyu		5885
1	larryzhong		931
2	xiaowuc1	you're a half a world away, but in my mind I whisper every single word you say	519
3	MaMengQi		462
4	ZhaoZiLong		459
5	HuangHanSheng		442
6	ZhangYiDe		440
7	GuanYunchang		437
/	flower	qingyu txdy!	334
8	hydd	Qingyu txdy $\\$ $\text{If my armor breaks, I'll fuse it back together}$	312
9	Crysfly	$$f(x)=(\sum_{i=0}^{n-1}\frac{y_i}{(x-q^i)\prod_{j\ne i}(q^i-q^j)})\prod_{i=0}^{n-1}(x-q^i)$$	254
10	tricyzhkx		230
11	chenshi		216
12	zhouhuanyi		199
13	maspy		193
14	Wu_Ren		189
15	He_Ren		183
16	repoman	$$\prod_{i=0}^{n-1} (1+q^iz) = \sum_{i=0}^n q^{i(i-1)/2}\binom ni_q z^i$$	176
17	qwq	$\displaystyle \sum_{i=1}^n [i,i+1,\cdots, i+k] \pmod{10^9+7}$	170
18	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
19	ckiseki		161
20	feecle6418	gyh ak ioi	160