A15109 | Koishi's Unconscious Permutation
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题目描述
As she closed the Satori's eye that could read minds, Koishi gained the ability to live in unconsciousness. Even she herself does not know what she is up to.
— Subterranean Animism
Koishi is unconsciously permuting $n$ numbers: $1, 2, \ldots, n$ .
She thinks the permutation $p$ is beautiful if $s=\sum\limits_{i=1}^{n-1} [p_i+1=p_{i+1}]$ . $[x]$ equals to $1$ if $x$ holds, or $0$ otherwise.
For each $k\in[0,n-1]$ , she wants to know the number of beautiful permutations of length $n$ satisfying $k=\sum\limits_{i=1}^{n-1}[p_i<p_{i+1}]$ .
— Subterranean Animism
Koishi is unconsciously permuting $n$ numbers: $1, 2, \ldots, n$ .
She thinks the permutation $p$ is beautiful if $s=\sum\limits_{i=1}^{n-1} [p_i+1=p_{i+1}]$ . $[x]$ equals to $1$ if $x$ holds, or $0$ otherwise.
For each $k\in[0,n-1]$ , she wants to know the number of beautiful permutations of length $n$ satisfying $k=\sum\limits_{i=1}^{n-1}[p_i<p_{i+1}]$ .
输入格式
There is one line containing two intergers $n$ ( $1 \leq n \leq 250\,000$ ) and $s$ ( $0 \leq s < n$ ).
输出格式
Print one line with $n$ intergers. The $i$ -th integers represents the answer of $k=i-1$ , modulo $998244353$ .
输入输出样例
输入 #1
2 0
输出 #1
1 0
输入 #2
4 1
输出 #2
0 3 6 0
输入 #3
8 3
输出 #3
0 0 0 35 770 980 70 0
Let $f(p)=\sum\limits_{i=1}^{n-1}[p_i<p_{i+1}]$ .
Testcase 1:
$[2,1]$ is the only beautiful permutation. And $f([2,1])=0$ .
Testcase 2:
Beautiful permutations:
$[1,2,4,3]$ , $[1,3,4,2]$ , $[1,4,2,3]$ , $[2,1,3,4]$ , $[2,3,1,4]$ , $[3,1,2,4]$ , $[3,4,2,1]$ , $[4,2,3,1]$ , $[4,3,1,2]$ . The first six of them satisfy $f(p)=2$ , while others satisfy $f(p)=1$ .
Testcase 1:
$[2,1]$ is the only beautiful permutation. And $f([2,1])=0$ .
Testcase 2:
Beautiful permutations:
$[1,2,4,3]$ , $[1,3,4,2]$ , $[1,4,2,3]$ , $[2,1,3,4]$ , $[2,3,1,4]$ , $[3,1,2,4]$ , $[3,4,2,1]$ , $[4,2,3,1]$ , $[4,3,1,2]$ . The first six of them satisfy $f(p)=2$ , while others satisfy $f(p)=1$ .
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评测结果:Accepted