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As a traditional event in the past years, join the IOI 2026 Prediction Game!
الأعلى تقييماً المقبولة
#293: SirTechnical
Accepted: : 289
#293: ucup-team5217
Accepted: : 289
#296: addiyoue
Accepted: : 288
You Know Who
#297: specialuser
Accepted: : 286
#298: rqoi031
Accepted: : 282
#299: bamboo123
Accepted: : 280
#299: jiamengtong
Accepted: : 280
#299: wrhaco
Accepted: : 280
#299: x3x3
Accepted: : 280
#299: yangjiaxi
Accepted: : 280
#304: ucup-team1817
Accepted: : 279
#305: ucup-team045
Accepted: : 276
#305: ucup-team3099
Accepted: : 276
#305: ucup-team7961
Accepted: : 276
目标：先刷500题看看实力有没有进步;备忘录：https://contest.ucup.ac/modify_team/ucup-team7961（更新队伍信息）
#308: WeaRD276
Accepted: : 275
#309: JKBoys
Accepted: : 274
#310: ucup-team1525
Accepted: : 273
#311: dxbt
Accepted: : 272
#312: Forever_Young
Accepted: : 271
#312: KevinLikesCoding
Accepted: : 271
$$\pi(n)=\phi\left(n,\pi\left(n^\frac{1}{3}\right)\right)-\pi\left (n^\frac{1}{3} \right ) + 1 - \sum_{p\in \left(n^\frac{1}{3},n^\frac{1}{2} \right] } \pi \left (\frac{n}{p} \right )-\pi(p)+1 $$
#314: AFewSuns
Accepted: : 269
$\displaystyle\sum_{n \geq 0}{(x+y)^n\frac{u^n}{n!}}=\sum_{k \geq 0}\frac{x}{x-kz}(x-kz)^k\frac{u^k}{k!}\sum_{l \geq 0}\frac{(y+kz)^l}{l!}u^l$
#315: as_lyr
Accepted: : 266
#315: intiger
Accepted: : 266
#315: ucup-team8556
Accepted: : 266
#318: tzl_Dedicatus545
Accepted: : 265
忙碌着 无为着 继续
#318: ucup-team122
Accepted: : 265
#320: xDarkbluex
Accepted: : 264
#321: luanyanjia
Accepted: : 263
#322: huaxiamengjin
Accepted: : 262
#322: ucup-team110
Accepted: : 262
#322: ucup-team7736
Accepted: : 262
#322: XY_Eleven
Accepted: : 262
#326: 353cerega
Accepted: : 261
#326: ChiFAN
Accepted: : 261
你是翅膀也是我肩膀
#326: garam1732
Accepted: : 261
#326: travel
Accepted: : 261
#326: ucup-team6749
Accepted: : 261
#331: Diaosi
Accepted: : 259
#331: hydd
Accepted: : 259
But are we all lost stars trying to light up the dark?
#331: wcyQwQ
Accepted: : 259
#334: He_Ren
Accepted: : 258
#334: sqrtqwq
Accepted: : 258
Alea iacta est!
#334: ucup-team1447
Accepted: : 258
没队要
#334: ucup-team7754
Accepted: : 258
#338: incent
Accepted: : 257
entr inc=incent
#338: sk091204
Accepted: : 257
#338: ucup-team4464
Accepted: : 257
#338: ucup-team4527
Accepted: : 257
#338: ucup-team5071
Accepted: : 257
#338: ucup-team7899
Accepted: : 257
#338: ushg8877
Accepted: : 257
#345: Zero_OP
Accepted: : 256
#346: ucup-team7879
Accepted: : 255
#347: Seniorious
Accepted: : 252
We do not know and will not know
#348: elacient
Accepted: : 251
#348: hshhh
Accepted: : 251
#348: nanika
Accepted: : 251
#348: ucup-team3515
Accepted: : 251
#352: GotoHiotori
Accepted: : 250
我大概，一辈子也忘不了 CRYCHIC
#353: IllusionaryDominance
Accepted: : 249
#353: yangjl
Accepted: : 249
#355: ucup-team180
Accepted: : 248
#356: jqh333
Accepted: : 247
#356: liuziao
Accepted: : 247
#356: sunnygreen
Accepted: : 247
どんな謎でも、はなまる解決！
#356: tricyzhkx
Accepted: : 247
#356: ucup-team2307
Accepted: : 247
#361: 617lyq
Accepted: : 246
#361: Sktn0089
Accepted: : 246
#361: ucup-team2172
Accepted: : 246
法克皮百吨
#364: ucup-team1293
Accepted: : 245
#365: jrjyy
Accepted: : 243
#365: Register
Accepted: : 243
#365: ucup-team2045
Accepted: : 243
#368: lunchbox
Accepted: : 242
#368: ucup-team7832
Accepted: : 242
#370: nathan4690
Accepted: : 241
#370: std
Accepted: : 241
哼
#370: ucup-team7683
Accepted: : 241
一直游到海水变蓝
#373: Crosselle
Accepted: : 240
#373: Tianyiwei
Accepted: : 240
#373: yimuhua
Accepted: : 240
3115201
#376: carrotqq
Accepted: : 239
#376: ucup-team267
Accepted: : 239
哈姆。
#376: zrczrczrczrc
Accepted: : 239
1
#379: ucup-team7725
Accepted: : 238
#380: lazy1105
Accepted: : 237
ぼっち・ざ・ろっく！
#381: Journey_to_Edge_Ring
Accepted: : 236
ECUST_飞向边界环 (est. 2025)Member:hatertumu1thuguanfu
#382: iee
Accepted: : 235
#382: MarSer020
Accepted: : 235
#382: ucup-team135
Accepted: : 235
#382: zdczdc
Accepted: : 235
#386: ETK
Accepted: : 234
「我是星 我愿投身前途未卜的群星，为梦长明。」
#386: RDFZchenyy
Accepted: : 234
悟已往之不谏，知来者之可追。实迷途其未远，觉今是而昨非。
#386: wsxcb
Accepted: : 234
#386: xmdxmdxmd
Accepted: : 234
#390: Francisco_Martin
Accepted: : 233
#390: ucup-team7183
Accepted: : 233
#390: ucup-team7466
Accepted: : 233
#393: 2021cyq
Accepted: : 232