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#1943: ucup-team944
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#2012: _slb
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#2012: AI80
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#2012: Albert711
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Calm Down.
#2012: andyc_03
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#2012: maxiaomeng
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1125，Catalan数！
#2012: oneirophages
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#2012: pooty
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#2012: Septemper
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#2012: ucup-team0520
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#2012: ucup-team4795
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#2071: _nebula_
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#2071: Anwar
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#2071: CangShuV
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#2071: code_unknownbug
Accepted: : 29
#2071: csy2005
Accepted: : 29
$1>0$
#2071: D_F_S
Accepted: : 29
#2071: Dan4Life
Accepted: : 29
#2071: Displace_
Accepted: : 29
$p(i,j)=\frac{j-1}{k-1}p(i-1,j)+\frac{k-j+1}{k-1}p(i-1,j-1),p(1,1)=1$
#2071: dsn20051209
Accepted: : 29
#2071: egypt_ioi2024_10
Accepted: : 29
$$\text{dp}_i = \min_{j < i} f(j)\times g(i) + h(j) + \text{dp}_j$$
#2071: Ex_sky
Accepted: : 29
#2071: felismpesciq03o5
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#2071: Golem__
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Remaker
#2071: hbbbb
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#2071: Hojstyer
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#2071: hxu10
Accepted: : 29
#2071: IdealizedRomance
Accepted: : 29
$f_t=\sum\limits_{i=0}^{n-1}{n\choose i}(-1)^{n-1-i}\frac{i^{t-1}(n-i)}{n^t}$
#2071: jager59
Accepted: : 29
#2071: jean
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#2071: LYLAKIOIAKIOI
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#2071: OFforest_1273
Accepted: : 29