結果
問題 | No.2605 Pickup Parentheses |
ユーザー | 👑 amentorimaru |
提出日時 | 2023-10-31 13:43:47 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,753 ms / 2,000 ms |
コード長 | 7,418 bytes |
コンパイル時間 | 196 ms |
コンパイル使用メモリ | 82,496 KB |
実行使用メモリ | 265,236 KB |
最終ジャッジ日時 | 2024-09-30 06:13:19 |
合計ジャッジ時間 | 22,749 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 38 ms
53,504 KB |
testcase_01 | AC | 37 ms
59,264 KB |
testcase_02 | AC | 37 ms
59,904 KB |
testcase_03 | AC | 53 ms
71,296 KB |
testcase_04 | AC | 54 ms
71,168 KB |
testcase_05 | AC | 56 ms
74,112 KB |
testcase_06 | AC | 62 ms
75,648 KB |
testcase_07 | AC | 61 ms
76,032 KB |
testcase_08 | AC | 63 ms
75,904 KB |
testcase_09 | AC | 54 ms
67,968 KB |
testcase_10 | AC | 60 ms
75,776 KB |
testcase_11 | AC | 55 ms
70,912 KB |
testcase_12 | AC | 48 ms
66,304 KB |
testcase_13 | AC | 52 ms
71,808 KB |
testcase_14 | AC | 58 ms
74,112 KB |
testcase_15 | AC | 67 ms
75,904 KB |
testcase_16 | AC | 54 ms
66,432 KB |
testcase_17 | AC | 66 ms
76,032 KB |
testcase_18 | AC | 725 ms
259,456 KB |
testcase_19 | AC | 393 ms
214,656 KB |
testcase_20 | AC | 103 ms
76,800 KB |
testcase_21 | AC | 82 ms
76,672 KB |
testcase_22 | AC | 74 ms
76,032 KB |
testcase_23 | AC | 930 ms
259,840 KB |
testcase_24 | AC | 84 ms
76,288 KB |
testcase_25 | AC | 1,442 ms
260,908 KB |
testcase_26 | AC | 1,594 ms
264,736 KB |
testcase_27 | AC | 735 ms
259,328 KB |
testcase_28 | AC | 59 ms
76,276 KB |
testcase_29 | AC | 147 ms
77,744 KB |
testcase_30 | AC | 423 ms
170,800 KB |
testcase_31 | AC | 47 ms
68,096 KB |
testcase_32 | AC | 38 ms
59,648 KB |
testcase_33 | AC | 840 ms
260,032 KB |
testcase_34 | AC | 60 ms
75,520 KB |
testcase_35 | AC | 49 ms
64,256 KB |
testcase_36 | AC | 59 ms
75,904 KB |
testcase_37 | AC | 620 ms
259,200 KB |
testcase_38 | AC | 152 ms
80,000 KB |
testcase_39 | AC | 92 ms
76,928 KB |
testcase_40 | AC | 227 ms
93,568 KB |
testcase_41 | AC | 250 ms
84,352 KB |
testcase_42 | AC | 275 ms
106,816 KB |
testcase_43 | AC | 117 ms
78,080 KB |
testcase_44 | AC | 153 ms
78,208 KB |
testcase_45 | AC | 111 ms
77,440 KB |
testcase_46 | AC | 96 ms
76,800 KB |
testcase_47 | AC | 59 ms
75,776 KB |
testcase_48 | AC | 192 ms
78,976 KB |
testcase_49 | AC | 261 ms
99,312 KB |
testcase_50 | AC | 149 ms
79,872 KB |
testcase_51 | AC | 37 ms
53,888 KB |
testcase_52 | AC | 182 ms
82,124 KB |
testcase_53 | AC | 225 ms
86,528 KB |
testcase_54 | AC | 168 ms
80,000 KB |
testcase_55 | AC | 240 ms
83,456 KB |
testcase_56 | AC | 106 ms
77,056 KB |
testcase_57 | AC | 39 ms
54,016 KB |
testcase_58 | AC | 329 ms
82,908 KB |
testcase_59 | AC | 425 ms
189,312 KB |
testcase_60 | AC | 761 ms
258,304 KB |
testcase_61 | AC | 1,088 ms
261,720 KB |
testcase_62 | AC | 1,270 ms
190,380 KB |
testcase_63 | AC | 1,753 ms
265,236 KB |
testcase_64 | AC | 614 ms
94,996 KB |
testcase_65 | AC | 505 ms
227,456 KB |
testcase_66 | AC | 429 ms
87,320 KB |
testcase_67 | AC | 944 ms
260,736 KB |
testcase_68 | AC | 236 ms
80,308 KB |
testcase_69 | AC | 35 ms
53,376 KB |
testcase_70 | AC | 47 ms
66,816 KB |
ソースコード
import sys input = sys.stdin.readline def read_values(): return tuple(map(int, input().split())) 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 fft=FFT(mod) def bin(a,b,f,rf): if a<0 or b<0 or a<b: return 0 return f[a]*rf[b]%mod*rf[a-b]%mod def main(): n,m=read_values() c={} for _ in range(m): l,r=read_values() c[r-l+1]=c.get(r-l+1,0)+1 if n%2: print(0) return f=[1]*(n+1) rf=[1]*(n+1) r=[1]*(n+1) for i in range(n): f[i+1]=f[i]*(i+1)%mod rf[i+1]=pow(f[i+1],-1,mod) r[i+1]=pow(i+1,-1,mod) p=[1] for k,v in c.items(): if k%2==1 or v==0: continue mul=-bin(k,k//2,f,rf)*r[k//2+1]%mod if v<250: for _ in range(v): pp=[0]*(len(p)+k//2) for i in range(len(p)): pp[i]=(pp[i]+p[i])%mod pp[i+k//2]=(pp[i+k//2]+p[i]*mul)%mod p=pp else: res=[0]*(k//2*v+1) for i in range(v+1): res[k//2*i]=pow(mul,i,mod)*bin(v,i,f,rf) p=fft.convolution(p,res) ans=0 for i in range(len(p)): ans+=p[i]*bin(n-i*2,n//2-i,f,rf)*r[n//2-i+1]%mod ans%=mod print(ans) if __name__ == "__main__": main()