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The 3rd Universal Cup Finals is coming! Join our Warm-up Game and Prediction Game and win the prizes! Learn more...
Top Rated Accepted
#5319: gyming1850
Accepted: : 20
#5319: H_
Accepted: : 20
#5319: hano
Accepted: : 20
#5319: haohuihui
Accepted: : 20
#5319: HHAZ
Accepted: : 20
#5319: Hqwq
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#5319: htyin
Accepted: : 20
#5319: icealsoheat
Accepted: : 20
#/: icpccamp2025-team04
Accepted: : 20
#/: icpccamp2025-team13
Accepted: : 20
#/: icpccamp2025-team21
Accepted: : 20
#5319: iordache_
Accepted: : 20
#5319: ItsJerr
Accepted: : 20
#5319: jiangdu
Accepted: : 20
#5319: jiejiejiang
Accepted: : 20
#5319: joelgun14
Accepted: : 20
#5319: Jun666
Accepted: : 20
#5319: JustinRochester
Accepted: : 20
#5319: JyyXDDDD
Accepted: : 20
#5319: KaguyaH
Accepted: : 20
#5319: kalikari
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#5319: KareemEssam
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#5319: Kijin_Seija
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#5319: kirep
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#5319: kklldxc
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#5319: kukuri
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#5319: lanjiarui
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#5319: lateboomers
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#5319: LiangBaiKai
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#5319: LinZhengyu
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#5319: liwuyou
Accepted: : 20
Motto.
#5319: lizhixuan
Accepted: : 20
#5319: lizhous
Accepted: : 20
#5319: Ljj18
Accepted: : 20
#5319: ljljljlj
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#5319: louisliang
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#5319: lsxhyyds
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#5319: lwg
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#5319: m1111
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#5319: ma_niu_bi
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#5319: maghrabyJr_
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#5319: manhao
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#5319: mason
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#5319: Mike66
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#5319: MilkingAnAloe
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#5319: MinecraftMoRan
Accepted: : 20
#5319: mocania
Accepted: : 20
#5319: myheartwaving
Accepted: : 20
I will start again and again for you.
#5319: najmuddin
Accepted: : 20
#5319: nguyentunglam
Accepted: : 20
#5319: NOXJY
Accepted: : 20
#5319: OAleksa
Accepted: : 20
#5319: omsincoconut
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#5319: OrangeSummer
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#5319: oyasumi_alice
Accepted: : 20
#5319: peiqi
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#5319: piokemon
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#5319: Pittow
Accepted: : 20
#/: pku2025-24
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#/: pku2025-50
Accepted: : 20
#5319: pyiming
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#5319: qdd
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#5319: Qglin_
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#5319: qkhm
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#5319: qoj-Account
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#5319: QQQ7777
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#5319: qwqpmp
Accepted: : 20
qwqpmp
#5319: RainbowDash
Accepted: : 20
#5319: RAS_PAREO
Accepted: : 20
传说最浪漫的地方就算在我的梦里都那么美丽
#5319: redbluetulip
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#5319: redwhite
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#5319: Saanteye
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#5319: sadad11111
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#5319: shepherdtoherd
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#5319: sheryh276
Accepted: : 20
#5319: Shinobu_Sengoku
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#5319: siewjh
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#5319: sio_
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#5319: SSH
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#5319: SupersonicMan12
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#5319: surgutti
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#5319: suzu
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#5319: sxye
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#5319: syndrome
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#5319: SZH
Accepted: : 20
#5319: T__f
Accepted: : 20
#5319: taniya
Accepted: : 20
$$\prod_{n=1}^\infty (1-x^n)=\sum_{k=-\infty}^\infty(-1)^kx^{\frac{k(3k-1)}{2}}=\sum_{k=0}^\infty(-1)^kx^{\frac{k(3k\pm 1)}{2}}$$
#5319: tobie
Accepted: : 20
#5319: toddler
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#5319: tousheng
Accepted: : 20
#5319: ucup-admin-3-1
Accepted: : 20
#5319: ucup-team1477
Accepted: : 20
#5319: ucup-team1479
Accepted: : 20
#5319: ucup-team1526
Accepted: : 20
#5319: ucup-team1611
Accepted: : 20
#5319: ucup-team1646
Accepted: : 20
#5319: ucup-team2362
Accepted: : 20
#5319: ucup-team2389
Accepted: : 20
#5319: ucup-team2485
Accepted: : 20
#5319: ucup-team2862
Accepted: : 20