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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
#834655#8047. DFS Order 4DerrickLoAC ✓470ms8632kbC++14513b2024-12-27 21:19:472024-12-27 21:19:47

Judging History

你现在查看的是最新测评结果

  • [2024-12-27 21:19:47]
  • 评测
  • 测评结果:AC
  • 用时:470ms
  • 内存:8632kb
  • [2024-12-27 21:19:47]
  • 提交

answer

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll f[805][805],inv[805];
signed main() {
	int n,mod;
	cin>>n>>mod;
	inv[1]=1;
	for(int i=2;i<=n;++i) inv[i]=inv[mod%i]*(mod-mod/i)%mod;
	f[1][0]=1;
	for(int i=2;i<=n;++i) for(int j=0;i+j<=n;++j) {
		f[i][j]=f[i-1][0];
		for(int k=2;k<i;++k) {
			f[i][j]=(f[i][j]+(f[k][0]+mod-f[k][j+i-1-k])*f[i-k][j])%mod;
		}
		f[i][j]=f[i][j]*inv[i+j-1]%mod;
	}
	ll ans=f[n][0];
	for(int i=1;i<n;++i) ans=ans*i%mod;
	cout<<ans;
	return 0;
}

这程序好像有点Bug,我给组数据试试?

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3648kb

input:

4 114514199

output:

2

result:

ok 1 number(s): "2"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3672kb

input:

10 998244353

output:

11033

result:

ok 1 number(s): "11033"

Test #3:

score: 0
Accepted
time: 1ms
memory: 4072kb

input:

100 1000000007

output:

270904395

result:

ok 1 number(s): "270904395"

Test #4:

score: 0
Accepted
time: 395ms
memory: 8056kb

input:

756 1001338769

output:

901942543

result:

ok 1 number(s): "901942543"

Test #5:

score: 0
Accepted
time: 461ms
memory: 8632kb

input:

793 1009036033

output:

301770320

result:

ok 1 number(s): "301770320"

Test #6:

score: 0
Accepted
time: 396ms
memory: 8008kb

input:

759 1005587659

output:

846376219

result:

ok 1 number(s): "846376219"

Test #7:

score: 0
Accepted
time: 423ms
memory: 8252kb

input:

773 1007855479

output:

1398019

result:

ok 1 number(s): "1398019"

Test #8:

score: 0
Accepted
time: 387ms
memory: 8008kb

input:

751 1006730639

output:

321287237

result:

ok 1 number(s): "321287237"

Test #9:

score: 0
Accepted
time: 435ms
memory: 8256kb

input:

778 1007760653

output:

430322899

result:

ok 1 number(s): "430322899"

Test #10:

score: 0
Accepted
time: 470ms
memory: 8304kb

input:

798 1007543827

output:

688720826

result:

ok 1 number(s): "688720826"

Test #11:

score: 0
Accepted
time: 467ms
memory: 8212kb

input:

796 1004841413

output:

258829347

result:

ok 1 number(s): "258829347"

Test #12:

score: 0
Accepted
time: 429ms
memory: 8148kb

input:

775 1005185189

output:

744278608

result:

ok 1 number(s): "744278608"

Test #13:

score: 0
Accepted
time: 470ms
memory: 8232kb

input:

800 1006012831

output:

508549367

result:

ok 1 number(s): "508549367"

Test #14:

score: 0
Accepted
time: 0ms
memory: 3720kb

input:

1 1001338769

output:

1

result:

ok 1 number(s): "1"

Test #15:

score: 0
Accepted
time: 0ms
memory: 3640kb

input:

2 1001338769

output:

1

result:

ok 1 number(s): "1"

Test #16:

score: 0
Accepted
time: 0ms
memory: 3664kb

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