[bzoj] 1025: [SCOI2009]游戏

03-18

[总结] 群论,Burnside引理,Polya计数

03-01

[poj] 2888: Magic Bracelet

01-01

[poj] 2409: Let it Bead

01-01

[poj] 2154: Color

01-01

[hdu] 4187: Alphabet Soup

01-01

[hdu] 2865: Birthday Toy

01-01