結果
問題 | No.2514 Twelvefold Way Returns |
ユーザー | 👑 amentorimaru |
提出日時 | 2023-09-06 19:35:20 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,707 ms / 3,000 ms |
コード長 | 7,345 bytes |
コンパイル時間 | 210 ms |
コンパイル使用メモリ | 82,492 KB |
実行使用メモリ | 78,532 KB |
最終ジャッジ日時 | 2024-09-20 15:51:03 |
合計ジャッジ時間 | 31,898 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 38 ms
54,144 KB |
testcase_01 | AC | 120 ms
77,184 KB |
testcase_02 | AC | 343 ms
77,184 KB |
testcase_03 | AC | 181 ms
77,204 KB |
testcase_04 | AC | 1,187 ms
77,536 KB |
testcase_05 | AC | 998 ms
77,572 KB |
testcase_06 | AC | 925 ms
77,220 KB |
testcase_07 | AC | 97 ms
77,312 KB |
testcase_08 | AC | 662 ms
77,620 KB |
testcase_09 | AC | 695 ms
77,184 KB |
testcase_10 | AC | 1,426 ms
77,232 KB |
testcase_11 | AC | 176 ms
77,184 KB |
testcase_12 | AC | 421 ms
77,492 KB |
testcase_13 | AC | 115 ms
77,032 KB |
testcase_14 | AC | 331 ms
77,184 KB |
testcase_15 | AC | 625 ms
76,928 KB |
testcase_16 | AC | 1,473 ms
77,656 KB |
testcase_17 | AC | 900 ms
77,048 KB |
testcase_18 | AC | 1,467 ms
77,224 KB |
testcase_19 | AC | 1,590 ms
77,548 KB |
testcase_20 | AC | 1,626 ms
77,484 KB |
testcase_21 | AC | 1,455 ms
77,460 KB |
testcase_22 | AC | 1,496 ms
78,532 KB |
testcase_23 | AC | 514 ms
77,184 KB |
testcase_24 | AC | 1,532 ms
77,544 KB |
testcase_25 | AC | 764 ms
77,072 KB |
testcase_26 | AC | 59 ms
69,428 KB |
testcase_27 | AC | 1,465 ms
77,824 KB |
testcase_28 | AC | 426 ms
77,184 KB |
testcase_29 | AC | 426 ms
77,428 KB |
testcase_30 | AC | 328 ms
77,128 KB |
testcase_31 | AC | 483 ms
76,928 KB |
testcase_32 | AC | 276 ms
77,056 KB |
testcase_33 | AC | 81 ms
76,416 KB |
testcase_34 | AC | 302 ms
77,152 KB |
testcase_35 | AC | 1,100 ms
77,468 KB |
testcase_36 | AC | 40 ms
54,784 KB |
testcase_37 | AC | 48 ms
62,848 KB |
testcase_38 | AC | 1,374 ms
77,312 KB |
testcase_39 | AC | 1,707 ms
77,224 KB |
testcase_40 | AC | 1,378 ms
77,316 KB |
ソースコード
import sys input = sys.stdin.readline def read_values(): return tuple(map(int, input().split())) def read_list(): return list(read_values()) 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): n=len(a);m=len(b) if not(a) or not(b): return [] if min(n,m)<=40: res=[0]*(n+m-1) for i in range(n): for j in range(m): res[i+j]+=a[i]*b[j] res[i+j]%=self.mod return res z=1<<((n+m-2).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(n+m-1): c[i]=(c[i]*iz)%self.mod return c[:n+m-1] mod = 998244353 def main(): n,m = read_values() fc = [1] * (m + 1) rf = [1] * (m + 1) for i in range(m): fc[i + 1] = fc[i] * (i + 1) % mod rf[i + 1] = pow(fc[i + 1], -1, mod) ans = [0] * 3 fft = FFT(mod) for w0 in range(m + 1): for w1 in range(m + 1): w2 = m - w0 - w1 if w2 < 0: break g = [0] * 3 gw = (w1 * 2 + w2) % 3 g[gw] = fc[m] * rf[w0] % mod * rf[w1] % mod * rf[w2] % mod f = [w0,w1,w2] bn = n mf = f[:] while bn: if bn % 2: g = fft.convolution(g,mf) g = [sum(g[i::3]) % mod for i in range(3)] mf = fft.convolution(mf,mf) mf = [sum(mf[i::3]) % mod for i in range(3)] bn //= 2 for i in range(3): ans[i] += g[i] div = pow(3,-1,mod) div = pow(div,m,mod) print((mod + ans[0] - ans[1]) * div % mod) if __name__ == "__main__": main()