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Top Rated Accepted
#200: hydd
Accepted: : 259
But are we all lost stars trying to light up the dark?
#202: NKheyuxiang
Accepted: : 257
#202: ucup-team4527
Accepted: : 257
#202: ucup-team5071
Accepted: : 257
#205: lgvc
Accepted: : 255
#206: ucup-team3099
Accepted: : 252
#206: ucup-team6336
Accepted: : 252
#208: ucup-team3515
Accepted: : 251
#209: operator_
Accepted: : 249
#209: ucup-team180
Accepted: : 249
#211: tricyzhkx
Accepted: : 248
#212: ucup-team2307
Accepted: : 247
#213: ucup-team2172
Accepted: : 246
法克皮百吨
#214: _CLY_
Accepted: : 245
#214: 617lyq
Accepted: : 245
#214: IllusionaryDominance
Accepted: : 245
#214: ucup-team1293
Accepted: : 245
#218: Misuki
Accepted: : 244
$\mathbb{C}[x]/(x^{2^n} - 1) \cong \mathbb{C}[x]/(x - \omega) \times \mathbb{C}[x]/(x - \omega^2) \times \ldots\times \mathbb{C}[x]/(x - \omega^{2^n})$
#218: Register
Accepted: : 244
#218: wsc2008
Accepted: : 244
#221: jrjyy
Accepted: : 243
#222: lunchbox
Accepted: : 242
#223: carrotqq
Accepted: : 240
#224: ucup-team267
Accepted: : 239
哈姆。
#225: ucup-team2045
Accepted: : 238
#226: iee
Accepted: : 236
#227: 0000pnc
Accepted: : 235
#227: ucup-team135
Accepted: : 235
#229: ucup-team7345
Accepted: : 233
#229: wsxcb
Accepted: : 233
#231: ucup-team3586
Accepted: : 231
#232: ucup-team5008
Accepted: : 230
#232: ucup-team5015
Accepted: : 230
#234: cmll02
Accepted: : 228
#234: hshhh
Accepted: : 228
#234: qzez
Accepted: : 228
对于无向图的情况，基尔霍夫矩阵为 $K=D-A$，其中 $D$ 为度数矩阵，$A$ 为邻接矩阵。树的个数为去掉 $K$ 一行一列的行列式的值。对于外向树，$D$ 为每个点的入边度数和，内向树相反。此时需要去掉根所在行列。BEST 定理：有向欧拉图的欧拉回路个数为：内向树个数乘以 $\prod\limits_{i=1}^{n}deg_i$，其中 $deg_i$ 为 $i$ 号点的度数。
#234: ucup-team1817
Accepted: : 228
#234: ucup-team3670
Accepted: : 228
#239: Larunatrecy
Accepted: : 227
#240: complexor
Accepted: : 226
#240: ucup-team7362
Accepted: : 226
#240: ushg8877
Accepted: : 226
#243: ucup-team4269
Accepted: : 225
#244: __jk__
Accepted: : 224
#244: huaxiamengjin
Accepted: : 224
#246: 8BQube
Accepted: : 222
#246: DitaMirika
Accepted: : 222
Face the fear,make the future.
#248: std
Accepted: : 221
哼
#248: ucup-team7536
Accepted: : 221
#250: makrav
Accepted: : 220
#250: SoyTony
Accepted: : 220
真実はいつもひとつ
#250: ucup-team3627
Accepted: : 220
#250: xlwang
Accepted: : 220
#254: justin_g_20
Accepted: : 219
#254: masterhuang
Accepted: : 219
不要逃避自己的命运
#254: ucup-team5984
Accepted: : 219
#257: Crying
Accepted: : 218
第五人格。
#257: maojun
Accepted: : 218
#257: shinonome_ena
Accepted: : 218
#257: ucup-team3097
Accepted: : 218
#257: wcyQwQ
Accepted: : 218
#262: chenshi
Accepted: : 217
#262: houzhiyuan
Accepted: : 217
#264: jxy2012
Accepted: : 216
#264: KobicGend
Accepted: : 216
#264: ucup-team6927
Accepted: : 216
一切都会逝去，唯有死神永生
#264: ucup-team870
Accepted: : 216
#268: cooluo
Accepted: : 215
π⁴+π⁵≈e⁶ | Per Aspera Ad Astra
#268: ucup-team3862
Accepted: : 215
#270: ucup-team580
Accepted: : 214
#271: ucup-team3790
Accepted: : 213
#272: ucup-team7256
Accepted: : 212
#273: ucup-team228
Accepted: : 211
#273: Wu_Ren
Accepted: : 211
#273: XY_Eleven
Accepted: : 211
#276: yoy68
Accepted: : 210
#276: yzhang
Accepted: : 210
如果结果不如你所愿，就在尘埃落定前奋力一搏
#278: LosMem
Accepted: : 209
#278: rizynvu
Accepted: : 209
#280: ucup-team123
Accepted: : 207
#281: gg_gong
Accepted: : 206
Who am I? Why am I here?
#281: nhuang685
Accepted: : 206
#281: ucup-team7545
Accepted: : 206
#284: ucup-team3734
Accepted: : 205
#284: ucup-team4478
Accepted: : 205
#286: do_while_true
Accepted: : 204
#286: Whales
Accepted: : 204
#286: yyyyxh
Accepted: : 204
What is OI (O_o)?
#289: Lzy_
Accepted: : 203
#289: ucup-team1565
Accepted: : 203
#291: Mynoghra
Accepted: : 202
Man! Mophie out! 我们需要更多莫非！
#291: new_dawn_2
Accepted: : 202
#291: SirTechnical
Accepted: : 202
#291: ucup-team3634
Accepted: : 202
#295: Calculatelove
Accepted: : 201
Love all my perfect imperfections.
#295: ucup-team2819
Accepted: : 201
#297: jimmyywang
Accepted: : 200
#297: ucup-team1055
Accepted: : 200
#297: ucup-team1617
Accepted: : 200
#297: ucup-team3774
Accepted: : 200