CodeForces - 997C Sky Full of Stars

07-08

bzoj 4816 [Sdoi2017]数字表格.md

04-01

bzoj 3994 [SDOI2015]约数个数和

03-11

bzoj 1005 [HNOI2008]明明的烦恼

02-21

bzoj 2301 HAOI2011 Problem b

02-21

hdu 1425 Happy 2004

02-10

POJ 1286-Necklace of Beads

02-09

luogu P1446 [HNOI2008]Cards

02-09

POJ 2154 color

02-09

Burnside引理与polay定理

02-07