NOI.AC

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#213800	#2157. 数列	zhangxinyang111	100	6467ms	8992kb	C++11	455b	2024-11-13 19:56:09	2024-11-13 23:04:07

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=1e6+7;
int f[N];
int n,p;
int qpow(int a,int b,int p)
{
	int ans=1;
	while(b)
	{
		if(b&1) ans=ans*a%p;
		a=a*a%p;
		b>>=1;
	}
	return ans;
}
signed main()
{
	cin.tie(nullptr) -> ios::sync_with_stdio(false);
	cin>>n>>p;
	f[1]=1;
	for(int i=2;i<=n;i++) f[i]=f[i-1]*(4*i-2)%p*qpow((i+1),p-2,p)%p;
	cout<<f[n]%p;
	return 0;
}
//f[n]=f[n-1]*(4*n-2)/(n+1)

源文件, 语言: C++11

详细

小提示：点击横条可展开更详细的信息

Test #1:

score: 5

Accepted

time: 2ms

memory: 1248kb

input:

921 998054347

output:

345389219

result:

ok single line: '345389219'

Test #2:

score: 5

Accepted

time: 2ms

memory: 1252kb

input:

926 998064329

output:

458756691

result:

ok single line: '458756691'

Test #3:

score: 5

Accepted

time: 0ms

memory: 1252kb

input:

1000 998074327

output:

457273797

result:

ok single line: '457273797'

Test #4:

score: 5

Accepted

time: 0ms

memory: 1252kb

input:

952 998084303

output:

329700115

result:

ok single line: '329700115'

Test #5:

score: 5

Accepted

time: 0ms

memory: 1252kb

input:

989 998094347

output:

94788253

result:

ok single line: '94788253'

Test #6:

score: 5

Accepted

time: 2ms

memory: 1248kb

input:

902 998104313

output:

911969455

result:

ok single line: '911969455'

Test #7:

score: 5

Accepted

time: 2ms

memory: 1248kb

input:

914 998114333

output:

827812986

result:

ok single line: '827812986'

Test #8:

score: 5

Accepted

time: 0ms

memory: 1252kb

input:

986 998124313

output:

169699253

result:

ok single line: '169699253'

Test #9:

score: 5

Accepted

time: 0ms

memory: 1252kb

input:

947 998134339

output:

761932751

result:

ok single line: '761932751'

Test #10:

score: 5

Accepted

time: 2ms

memory: 1252kb

input:

934 998144339

output:

42889072

result:

ok single line: '42889072'

Test #11:

score: 5

Accepted

time: 671ms

memory: 8992kb

input:

991572 998154343

output:

277089318

result:

ok single line: '277089318'

Test #12:

score: 5

Accepted

time: 573ms

memory: 8532kb

input:

932800 998164337

output:

945072504

result:

ok single line: '945072504'

Test #13:

score: 5

Accepted

time: 557ms

memory: 8304kb

input:

903603 998174341

output:

29916736

result:

ok single line: '29916736'

Test #14:

score: 5

Accepted

time: 680ms

memory: 8732kb

input:

958646 998184331

output:

802903490

result:

ok single line: '802903490'

Test #15:

score: 5

Accepted

time: 607ms

memory: 8924kb

input:

983016 998194349

output:

802900579

result:

ok single line: '802900579'

Test #16:

score: 5

Accepted

time: 576ms

memory: 8452kb

input:

922347 998204353

output:

228575331

result:

ok single line: '228575331'

Test #17:

score: 5

Accepted

time: 600ms

memory: 8872kb

input:

976053 998214317

output:

982618317

result:

ok single line: '982618317'

Test #18:

score: 5

Accepted

time: 678ms

memory: 8724kb

input:

957300 998224351

output:

514549818

result:

ok single line: '514549818'

Test #19:

score: 5

Accepted

time: 759ms

memory: 8444kb

input:

921760 998234353

output:

470386410

result:

ok single line: '470386410'

Test #20:

score: 5

Accepted

time: 756ms

memory: 8380kb

input:

912948 998244353

output:

129235345

result:

ok single line: '129235345'