結果
問題 | No.2959 Dolls' Tea Party |
ユーザー | 👑 binap |
提出日時 | 2024-10-22 10:27:33 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 7,590 bytes |
コンパイル時間 | 256 ms |
コンパイル使用メモリ | 82,844 KB |
実行使用メモリ | 242,464 KB |
最終ジャッジ日時 | 2024-10-29 00:09:54 |
合計ジャッジ時間 | 9,348 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 384 ms
85,140 KB |
testcase_01 | AC | 388 ms
77,916 KB |
testcase_02 | AC | 390 ms
78,152 KB |
testcase_03 | AC | 387 ms
78,172 KB |
testcase_04 | AC | 388 ms
78,172 KB |
testcase_05 | AC | 388 ms
77,840 KB |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | TLE | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
ソースコード
import sys import math from collections import deque # https://github.com/shakayami/ACL-for-python # https://github.com/shakayami/ACL-for-python/blob/master/convolution.py class FFT(): def primitive_root_constexpr(self,m): if m==2:return 1 if m==167772161:return 3 if m==469762049:return 3 if m==754974721:return 11 if m==998244353:return 3 divs=[0]*20 divs[0]=2 cnt=1 x=(m-1)//2 while(x%2==0):x//=2 i=3 while(i*i<=x): if (x%i==0): divs[cnt]=i cnt+=1 while(x%i==0): x//=i i+=2 if x>1: divs[cnt]=x cnt+=1 g=2 while(1): ok=True for i in range(cnt): if pow(g,(m-1)//divs[i],m)==1: ok=False break if ok: return g g+=1 def bsf(self,x): res=0 while(x%2==0): res+=1 x//=2 return res rank2=0 root=[] iroot=[] rate2=[] irate2=[] rate3=[] irate3=[] def __init__(self,MOD): self.mod=MOD self.g=self.primitive_root_constexpr(self.mod) self.rank2=self.bsf(self.mod-1) self.root=[0 for i in range(self.rank2+1)] self.iroot=[0 for i in range(self.rank2+1)] self.rate2=[0 for i in range(self.rank2)] self.irate2=[0 for i in range(self.rank2)] self.rate3=[0 for i in range(self.rank2-1)] self.irate3=[0 for i in range(self.rank2-1)] self.root[self.rank2]=pow(self.g,(self.mod-1)>>self.rank2,self.mod) self.iroot[self.rank2]=pow(self.root[self.rank2],self.mod-2,self.mod) for i in range(self.rank2-1,-1,-1): self.root[i]=(self.root[i+1]**2)%self.mod self.iroot[i]=(self.iroot[i+1]**2)%self.mod prod=1;iprod=1 for i in range(self.rank2-1): self.rate2[i]=(self.root[i+2]*prod)%self.mod self.irate2[i]=(self.iroot[i+2]*iprod)%self.mod prod=(prod*self.iroot[i+2])%self.mod iprod=(iprod*self.root[i+2])%self.mod prod=1;iprod=1 for i in range(self.rank2-2): self.rate3[i]=(self.root[i+3]*prod)%self.mod self.irate3[i]=(self.iroot[i+3]*iprod)%self.mod prod=(prod*self.iroot[i+3])%self.mod iprod=(iprod*self.root[i+3])%self.mod def butterfly(self,a): n=len(a) h=(n-1).bit_length() LEN=0 while(LEN<h): if (h-LEN==1): p=1<<(h-LEN-1) rot=1 for s in range(1<<LEN): offset=s<<(h-LEN) for i in range(p): l=a[i+offset] r=a[i+offset+p]*rot a[i+offset]=(l+r)%self.mod a[i+offset+p]=(l-r)%self.mod rot*=self.rate2[(~s & -~s).bit_length()-1] rot%=self.mod LEN+=1 else: p=1<<(h-LEN-2) rot=1 imag=self.root[2] for s in range(1<<LEN): rot2=(rot*rot)%self.mod rot3=(rot2*rot)%self.mod offset=s<<(h-LEN) for i in range(p): a0=a[i+offset] a1=a[i+offset+p]*rot a2=a[i+offset+2*p]*rot2 a3=a[i+offset+3*p]*rot3 a1na3imag=(a1-a3)%self.mod*imag a[i+offset]=(a0+a2+a1+a3)%self.mod a[i+offset+p]=(a0+a2-a1-a3)%self.mod a[i+offset+2*p]=(a0-a2+a1na3imag)%self.mod a[i+offset+3*p]=(a0-a2-a1na3imag)%self.mod rot*=self.rate3[(~s & -~s).bit_length()-1] rot%=self.mod LEN+=2 def butterfly_inv(self,a): n=len(a) h=(n-1).bit_length() LEN=h while(LEN): if (LEN==1): p=1<<(h-LEN) irot=1 for s in range(1<<(LEN-1)): offset=s<<(h-LEN+1) for i in range(p): l=a[i+offset] r=a[i+offset+p] a[i+offset]=(l+r)%self.mod a[i+offset+p]=(l-r)*irot%self.mod irot*=self.irate2[(~s & -~s).bit_length()-1] irot%=self.mod LEN-=1 else: p=1<<(h-LEN) irot=1 iimag=self.iroot[2] for s in range(1<<(LEN-2)): irot2=(irot*irot)%self.mod irot3=(irot*irot2)%self.mod offset=s<<(h-LEN+2) for i in range(p): a0=a[i+offset] a1=a[i+offset+p] a2=a[i+offset+2*p] a3=a[i+offset+3*p] a2na3iimag=(a2-a3)*iimag%self.mod a[i+offset]=(a0+a1+a2+a3)%self.mod a[i+offset+p]=(a0-a1+a2na3iimag)*irot%self.mod a[i+offset+2*p]=(a0+a1-a2-a3)*irot2%self.mod a[i+offset+3*p]=(a0-a1-a2na3iimag)*irot3%self.mod irot*=self.irate3[(~s & -~s).bit_length()-1] irot%=self.mod LEN-=2 def convolution(self,a,b,k=None): n=len(a);m=len(b) if not k: k=n+m-1 if not(a) or not(b): return [] if k<=50: res=[0]*k for i in range(n): for j in range(min(m, k-i)): res[i+j]+=a[i]*b[j] res[i+j]%=self.mod return res z=1<<((k+1).bit_length()) a=a+[0]*(z-n) b=b+[0]*(z-m) self.butterfly(a) self.butterfly(b) c=[(a[i]*b[i])%self.mod for i in range(z)] self.butterfly_inv(c) iz=pow(z,self.mod-2,self.mod) for i in range(k): c[i]=(c[i]*iz)%self.mod return c[:k] MOD = 998244353 fft = FFT(MOD) def mod_pow(x, t): if t == 0: return 1 a = mod_pow(x, t // 2) a *= a if t % 2 == 1: a *= x return a % MOD def mod_inv(x): return mod_pow(x, MOD - 2) L = 100000 def main(): n, k = map(int, input().split()) a = list(map(int, input().split())) ans = 0 ma = {} facts = [1] * (L + 1) ifacts = [1] * (L + 1) for i in range(L): facts[i + 1] = facts[i] * (i + 1) % MOD for i in range(L): ifacts[i + 1] = mod_inv(facts[i + 1]) for r in range(1, k + 1): p = math.gcd(k, r) if p in ma: ma[p] += 1 else: ma[p] = 1 for p, t in ma.items(): q = k // p de = deque([[1]]) for i in range(n): if a[i] // q == 0: continue f = [] for x in range(a[i] // q + 1): f.append(ifacts[x]) de.append(f) while len(de) >= 2: f = de.popleft() g = de.popleft() h = fft.convolution(f, g) de.append(h) res = de.popleft() if len(res) > p: ans += res[p] * facts[p]* t % MOD print(ans * mod_inv(k) % MOD) if __name__ == '__main__': main()