| 101 | zlt | | 263 |
| 102 | ucup-team1447 | 没队要 | 260 |
| 102 | ucup-team3612 | | 260 |
| 104 | ucup-team045 | | 257 |
| 105 | Max_s_xaM | | 255 |
| 106 | JohnAlfnov | progynova | 254 |
| 106 | ucup-team3161 | | 254 |
| 106 | ucup-team3607 | | 254 |
| 109 | ucup-team180 | | 251 |
| 109 | ucup-team896 | | 251 |
| 111 | tricyzhkx | | 250 |
| 112 | He_Ren | | 249 |
| 113 | Afterlife | 🤯 | 248 |
| 114 | ucup-team2172 | 法克皮百吨 | 247 |
| 114 | ucup-team2307 | | 247 |
| 114 | Urd | | 247 |
| 117 | iee | | 245 |
| 117 | ucup-team110 | | 245 |
| 117 | ucup-team1293 | | 245 |
| 117 | ucup-team3727 | | 245 |
| 117 | zhoukangyang | | 245 |
| 122 | Register | | 244 |
| 123 | MiniLong | | 242 |
| 124 | LuSter_M | | 240 |
| 124 | ucup-team267 | 哈姆。 | 240 |
| 126 | bulijiojiodibuliduo | | 237 |
| 126 | sdoi | $$P_{a_i}(x) = [t^{a_i}]\frac{1}{1-xF(t)}$$ | 237 |
| 128 | tarjen | Nanani Nanani 喜欢喜欢喜欢
training record:
https://wiki.cubercsl.cn/Antiamuny_Computation_(2023)
https://wiki.cubercsl.cn/Mako,suki_(2024) | 236 |
| 129 | ucup-team3602 | | 233 |
| 130 | ucup-team3586 | | 232 |
| 131 | ucup-team3556 | | 231 |
| 132 | qzez | 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。 | 229 |
| 133 | ushg8877 | | 226 |
| 134 | ucup-team018 | | 225 |
| 134 | ucup-team2045 | | 225 |
| 136 | ucup-team902 | | 224 |
| 137 | 8BQube | | 222 |
| 137 | ucup-team1817 | | 222 |
| 139 | chenshi | | 221 |
| 139 | karuna | | 221 |
| 141 | ucup-team3705 | | 219 |
| 142 | IllusionaryDominance | | 216 |
| 143 | ucup-team4527 | | 215 |
| 143 | ucup-team870 | | 215 |
| 145 | repoman | $$\prod_{i=0}^{n-1} (1+q^iz) = \sum_{i=0}^n q^{i(i-1)/2}\binom ni_q z^i$$ | 213 |
| 145 | SorahISA | | 213 |
| 147 | ucup-team228 | | 211 |
| 147 | ucup-team3862 | | 211 |
| 149 | carrotqq | | 210 |
| 150 | yyyyxh | What is OI (O_o)? | 208 |
| 151 | ucup-team123 | | 207 |
| 151 | UESTC_DECAYALI | | 207 |
| 153 | new_dawn_2 | | 203 |
| 154 | do_while_true | | 202 |
| 155 | ucup-team1055 | | 201 |
| 155 | ucup-team1617 | | 201 |
| 157 | ucup-team1002 | | 199 |
| 157 | ucup-team1126 | | 199 |
| 157 | Wu_Ren | | 199 |
| 160 | Nova_NightWind0311 | | 198 |
| 160 | qwq | $\displaystyle \sum_{i=1}^n [i,i+1,\cdots, i+k] \pmod{10^9+7}$ | 198 |
| 160 | ucup-team3475 | | 198 |
| 160 | ucup-team3634 | | 198 |
| 164 | ucup-team029 | | 196 |
| 164 | ucup-team1565 | | 196 |
| 164 | ucup-team3648 | | 196 |
| 164 | ucup-team580 | | 196 |
| 168 | 11d10xy | 格言尚未上传，请稍后查看！ | 195 |
| 168 | yzhang | 如果结果不如你所愿，就在尘埃落定前奋力一搏 | 195 |
| 170 | Crying | 第五人格。 | 193 |
| 170 | ucup-team1191 | | 193 |
| 172 | ucup-team635 | | 192 |
| 173 | _map_ | map<problem_statement,vector<pair<oj,problem_id>>> | 191 |
| 173 | ucup-team572 | | 191 |
| 175 | myee | 与其诺诺以顺，不若谔谔以昌 | 188 |
| 176 | ucup-team026 | | 187 |
| 177 | LaVuna47 | | 186 |
| 177 | ucup-team4217 | | 186 |
| 177 | ucup-team425 | | 186 |
| 177 | ucup-team5062 | | 186 |
| 181 | DitaMirika | | 184 |
| 181 | OIer_kzc | | 184 |
| 183 | feecle6418 | gyh ak ioi | 183 |
| 183 | yoy68 | | 183 |
| 185 | ucup-team1001 | utopian | 182 |
| 186 | pandapythoner | | 181 |
| 186 | ucup-team3515 | | 181 |
| 188 | ucup-team3583 | | 180 |
| 189 | monstersqwq | | 179 |
| 190 | ucup-team3790 | | 178 |
| 191 | ucup-team2454 | | 177 |
| 191 | ucup-team2819 | | 177 |
| 193 | arnold518 | | 176 |
| 193 | nhuang685 | | 176 |
| 193 | ucup-team1376 | CJOIers? | 176 |
| 193 | zjy0001 | | 176 |
| 197 | ucup-team1782 | | 175 |
| 197 | ucup-team3474 | | 175 |
| 197 | zhangboju | 短暂登上首页并即将掉下来 | 175 |
| 200 | KiharaTouma | https://www.cnblogs.com/KiharaTouma | 174 |