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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#546852#8047. DFS Order 4NKheyuxiangAC ✓137ms8676kbC++14759b2024-09-04 14:41:442024-09-04 14:41:44

Judging History

你现在查看的是最新测评结果

  • [2024-09-04 14:41:44]
  • 评测
  • 测评结果:AC
  • 用时:137ms
  • 内存:8676kb
  • [2024-09-04 14:41:44]
  • 提交

answer

#include<bits/stdc++.h>
#define N 805
using namespace std;
int mod,n,ans;
unsigned long long f[N][N];
int md(int x){return x>=mod?x-mod:x;}
int power(int x,int y){
	int res=1;
	while(y){
		if(y&1) res=1ll*res*x%mod;
		x=1ll*x*x%mod;
		y=y/2;
	}
	return res;
}
int main(){
	scanf("%d%d",&n,&mod);
	if(n==1){printf("1");return 0;}
	for(int i=1;i<=n;i++) f[1][i]=1;
	for(int i=2;i<n;i++){
		int ny=power(i,mod-2);
		for(int j=1;j<i;j++){
			f[i][j]=md(f[i-1][j+1]-f[i-1][j-1]+mod);
			for(int k=1;k<i-j;k++){
				f[i][j]+=f[k][1]*md(f[i-1-k][j]-f[i-1-k][j-1]+mod);
				if((k&7)==0) f[i][j]%=mod;
			}
			f[i][j]=f[i][j]%mod*ny%mod;
		}
	}
	ans=f[n-1][1];
	for(int i=1;i<n;i++) ans=1ll*ans*i%mod; 
	printf("%d",ans);
	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: 3876kb

input:

4 114514199

output:

2

result:

ok 1 number(s): "2"

Test #2:

score: 0
Accepted
time: 1ms
memory: 6012kb

input:

10 998244353

output:

11033

result:

ok 1 number(s): "11033"

Test #3:

score: 0
Accepted
time: 1ms
memory: 4308kb

input:

100 1000000007

output:

270904395

result:

ok 1 number(s): "270904395"

Test #4:

score: 0
Accepted
time: 106ms
memory: 8604kb

input:

756 1001338769

output:

901942543

result:

ok 1 number(s): "901942543"

Test #5:

score: 0
Accepted
time: 130ms
memory: 8596kb

input:

793 1009036033

output:

301770320

result:

ok 1 number(s): "301770320"

Test #6:

score: 0
Accepted
time: 108ms
memory: 8288kb

input:

759 1005587659

output:

846376219

result:

ok 1 number(s): "846376219"

Test #7:

score: 0
Accepted
time: 122ms
memory: 8408kb

input:

773 1007855479

output:

1398019

result:

ok 1 number(s): "1398019"

Test #8:

score: 0
Accepted
time: 112ms
memory: 8352kb

input:

751 1006730639

output:

321287237

result:

ok 1 number(s): "321287237"

Test #9:

score: 0
Accepted
time: 124ms
memory: 8356kb

input:

778 1007760653

output:

430322899

result:

ok 1 number(s): "430322899"

Test #10:

score: 0
Accepted
time: 124ms
memory: 8676kb

input:

798 1007543827

output:

688720826

result:

ok 1 number(s): "688720826"

Test #11:

score: 0
Accepted
time: 123ms
memory: 8668kb

input:

796 1004841413

output:

258829347

result:

ok 1 number(s): "258829347"

Test #12:

score: 0
Accepted
time: 124ms
memory: 8312kb

input:

775 1005185189

output:

744278608

result:

ok 1 number(s): "744278608"

Test #13:

score: 0
Accepted
time: 137ms
memory: 8432kb

input:

800 1006012831

output:

508549367

result:

ok 1 number(s): "508549367"

Test #14:

score: 0
Accepted
time: 0ms
memory: 3752kb

input:

1 1001338769

output:

1

result:

ok 1 number(s): "1"

Test #15:

score: 0
Accepted
time: 0ms
memory: 3884kb

input:

2 1001338769

output:

1

result:

ok 1 number(s): "1"

Test #16:

score: 0
Accepted
time: 1ms
memory: 6000kb

input:

9 1009036033

output:

1780

result:

ok 1 number(s): "1780"

Test #17:

score: 0
Accepted
time: 0ms
memory: 3744kb

input:

14 1001338769

output:

43297358

result:

ok 1 number(s): "43297358"

Extra Test:

score: 0
Extra Test Passed