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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#421627#8721. 括号序列warzoneAC ✓1311ms21916kbC++143.8kb2024-05-25 22:46:052024-05-25 22:46:06

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你现在查看的是最新测评结果

  • [2024-05-25 22:46:06]
  • 评测
  • 测评结果:AC
  • 用时:1311ms
  • 内存:21916kb
  • [2024-05-25 22:46:05]
  • 提交

answer

#include<stdio.h>
#include<string.h>
typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int word;
typedef unsigned short hword;
typedef unsigned char byte;
#define mx 19
#define mx_ 18
word realid[1<<(mx+1)];
#define id(size,i) realid[(i)|(size)]
#define FOR(size) for(word i=0;i<(size);++i)
#define fftfor(size)								\
	for(word floor=1;floor<(size);floor<<=1)		\
		for(word head=0;head<(size);head+=floor<<1)	\
			for(word i=0;i<floor;++i)
const word mod=998244353,nimod=29;
inline word qpow(word a,word b){
	word ans=1;
	for(;b;b>>=1){
		if(b&1) ans=1ull*ans*a%mod;
		a=1ull*a*a%mod;
	}
	return ans;
}
word root[1<<mx],inv[1<<mx],ni[nimod];
struct READ{
	char c;
	inline READ(){
		c=getchar();
		ni[1]=1,ni[2]=qpow(2,mod-2);
		for(word floor=1,i=2;floor<=mx;++floor){
			ni[(1u<<floor)%nimod]=1ull*ni[(1u<<(floor-1))%nimod]*ni[2]%mod;
			for(;i<(1u<<(floor+1));++i)
				realid[i]=(i&1)<<(floor-1)|realid[i>>1];
		}	
		const word num1=qpow(3,(mod-1)>>mx);
		const word num2=qpow(num1,mod-2);
		root[1<<mx_]=inv[1<<mx_]=1;
		for(word i=(1<<mx_)+1;i<(1<<mx);++i){
			root[i]=1ull*num1*root[i-1]%mod;
			inv[i]=1ull*num2*inv[i-1]%mod;
		}
		for(word i=(1u<<mx_)-1;i;--i)
			root[i]=root[i<<1],inv[i]=inv[i<<1];
	}
	template<typename type>
	inline READ& operator >>(type& num){
		while('0'>c||c>'9') c=getchar();
		for(num=0;'0'<=c&&c<='9';c=getchar())
			num=num*10+(c-'0');
		return *this;
	}
}cin;
#define ntt(num,root)(							\
	num1=num[head|i],num2=num[head|i|floor],	\
    num1+=(num2=1ull*num2*root[i|floor]%mod),	\
	num[head|i]=num1>=mod? num1-mod:num1,		\
	num1-=num2,num1+=mod-num2,					\
	num[head|i|floor]=num1>=mod? num1-mod:num1)
namespace FFT{
	struct fftreg{
		word ecx[1<<mx];
		template<typename type>
		inline void operator()(const word size,const type& f){
			FOR(size>>1){
				ecx[id(size,i)]=f[i];
				ecx[id(size,size>>1|i)]=0;
			}
			word num1,num2;
			fftfor(size) ntt(ecx,root);
		}
	};
	inline void conv(const word size,const fftreg &f,
		const fftreg &g,word *const f_times_g){
		FOR(size) f_times_g[id(size,i)]=1ull*f.ecx[i]*g.ecx[i]%mod;
		word num1,num2;
		fftfor(size) ntt(f_times_g,inv);
		num1=ni[size%nimod];
		FOR(size) f_times_g[i]=1ull*num1*f_times_g[i]%mod;
	}
}
using FFT::fftreg;
using FFT::conv;
word in[1<<mx],eax[1<<mx],ebx[1<<mx];
fftreg ecx,edx;
#define newton(size_)    \
    word size=2;   		\
    while(size<<=1,(size>>2)<(size_))

inline void _1(const word size_){
	ebx[0]=qpow(eax[0],mod-2);
	newton(size_){
		ecx(size,eax),edx(size,ebx);
		conv(size,ecx,edx,ebx);
		FOR(size) ebx[i]=(mod-ebx[i])%mod;
		ebx[0]=(2+ebx[0])%mod;
		ecx(size,ebx);
		conv(size,ecx,edx,ebx);
	}
}
word fact[1u<<mx_],rev[1u<<mx_];
inline void ln(const word size){
	_1(size),ecx(size<<1,ebx);
	FOR(size) ebx[i]=(1ull+i)*eax[i+1]%mod;
	edx(size<<1,ebx),conv(size<<1,ecx,edx,ebx);
	for(word i=size-1;i;--i)
		ebx[i]=1ull*rev[i]*fact[i-1]%mod*ebx[i-1]%mod;
	ebx[0]=0;
}
inline void exp_(const word size_){
	eax[0]=1;
	newton(size_){
		ln(size>>1);
		FOR(size>>1) ebx[i]=(in[i]+mod-ebx[i])%mod;
		ebx[0]=(ebx[0]+1)%mod;
		ecx(size,eax),edx(size,ebx);
		conv(size,ecx,edx,eax);
	}
}
inline void solve(const word size_){
	in[0]=0;
	newton(size_){
		exp_(size>>1);
		(in[0]+=mod-1)%=mod;
		ecx(size,in),edx(size,eax);
		(eax[0]+=mod-ni[2])%=mod;
		conv(size,ecx,edx,in),_1(size>>1);
		(++in[0])%=mod,(in[1]+=mod-ni[2])%=mod;
		ecx(size,in),edx(size,ebx);
		conv(size,ecx,edx,in);
	}
}
int main(){
	word n,size=1;
	cin>>n,fact[0]=inv[0]=1;
	for(word i=1;i<=n;++i)
		fact[i]=1ull*i*fact[i-1]%mod;
	rev[n]=qpow(fact[n],mod-2);
	for(word i=n;i;--i)
		rev[i-1]=1ull*i*rev[i]%mod;
	for(;size<=n;size<<=1);
	solve(size);
	FOR(size) eax[i]=in[i];
	(++eax[0])%=mod,_1(size);
	printf("%u",1ull*ebx[n]*fact[n]%mod);
	return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 11588kb

input:

3

output:

28

result:

ok 1 number(s): "28"

Test #2:

score: 0
Accepted
time: 5ms
memory: 10668kb

input:

1

output:

1

result:

ok 1 number(s): "1"

Test #3:

score: 0
Accepted
time: 5ms
memory: 9736kb

input:

2

output:

4

result:

ok 1 number(s): "4"

Test #4:

score: 0
Accepted
time: 5ms
memory: 9728kb

input:

4

output:

282

result:

ok 1 number(s): "282"

Test #5:

score: 0
Accepted
time: 0ms
memory: 9732kb

input:

5

output:

3718

result:

ok 1 number(s): "3718"

Test #6:

score: 0
Accepted
time: 2ms
memory: 9728kb

input:

6

output:

60694

result:

ok 1 number(s): "60694"

Test #7:

score: 0
Accepted
time: 0ms
memory: 9744kb

input:

7

output:

1182522

result:

ok 1 number(s): "1182522"

Test #8:

score: 0
Accepted
time: 2ms
memory: 9640kb

input:

8

output:

26791738

result:

ok 1 number(s): "26791738"

Test #9:

score: 0
Accepted
time: 5ms
memory: 9704kb

input:

9

output:

692310518

result:

ok 1 number(s): "692310518"

Test #10:

score: 0
Accepted
time: 2ms
memory: 9704kb

input:

10

output:

135061370

result:

ok 1 number(s): "135061370"

Test #11:

score: 0
Accepted
time: 2ms
memory: 9736kb

input:

100

output:

423669705

result:

ok 1 number(s): "423669705"

Test #12:

score: 0
Accepted
time: 11ms
memory: 9900kb

input:

1234

output:

878522960

result:

ok 1 number(s): "878522960"

Test #13:

score: 0
Accepted
time: 282ms
memory: 12704kb

input:

54321

output:

827950477

result:

ok 1 number(s): "827950477"

Test #14:

score: 0
Accepted
time: 598ms
memory: 15360kb

input:

65536

output:

380835743

result:

ok 1 number(s): "380835743"

Test #15:

score: 0
Accepted
time: 1293ms
memory: 20944kb

input:

131072

output:

842796122

result:

ok 1 number(s): "842796122"

Test #16:

score: 0
Accepted
time: 634ms
memory: 15892kb

input:

131071

output:

981021531

result:

ok 1 number(s): "981021531"

Test #17:

score: 0
Accepted
time: 599ms
memory: 15876kb

input:

131070

output:

480197639

result:

ok 1 number(s): "480197639"

Test #18:

score: 0
Accepted
time: 1311ms
memory: 20988kb

input:

131074

output:

383000585

result:

ok 1 number(s): "383000585"

Test #19:

score: 0
Accepted
time: 1300ms
memory: 20960kb

input:

131073

output:

316664839

result:

ok 1 number(s): "316664839"

Test #20:

score: 0
Accepted
time: 1307ms
memory: 21904kb

input:

250000

output:

119658643

result:

ok 1 number(s): "119658643"

Test #21:

score: 0
Accepted
time: 1305ms
memory: 21916kb

input:

249999

output:

78110138

result:

ok 1 number(s): "78110138"

Test #22:

score: 0
Accepted
time: 1291ms
memory: 21888kb

input:

249998

output:

297253469

result:

ok 1 number(s): "297253469"

Extra Test:

score: 0
Extra Test Passed