QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#710343#9561. 树数叔术ANIG0 14ms4052kbC++141000b2024-11-04 19:30:362024-11-04 19:30:42

Judging History

你现在查看的是最新测评结果

  • [2024-11-04 19:30:42]
  • 评测
  • 测评结果:0
  • 用时:14ms
  • 内存:4052kb
  • [2024-11-04 19:30:36]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=155;
int n,m,mods,jc[N],C[N][N],f[N][N],dp[N],g[N][N],res;
signed main(){
	cin>>n>>m>>mods;
	if(m>n){
		cout<<"0";
		return 0;
	}
	jc[0]=1;
	for(int i=1;i<=n;i++)jc[i]=jc[i-1]*i%mods;
	for(int i=0;i<=n;i++)C[i][0]=1;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			C[i][j]=(C[i-1][j]+C[i-1][j-1])%mods;
		}
	}
	f[0][0]=1;
	for(int i=1;i<=m-2;i++){
		for(int j=1;j<=n;j++){
			for(int k=1;k<=j;k++){
				f[i][j]+=f[i-1][j-k]*C[j][k]%mods;
			}
			f[i][j]%=mods;
		}
	}
	dp[1]=1;
	for(int i=2;i<=n;i++){
		for(int j=1;j<i;j++){
			dp[i]+=dp[i-j]*C[i-1][j-1]%mods;
		}
		dp[i]%=mods;
	}
	g[0][0]=1;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			for(int k=1;k<=j;k++){
				g[i][j]+=g[i-1][j-k]*C[j][k]%mods*k%mods;
			}
			g[i][j]%=mods;
		}
	}
	for(int i=2;i<=n;i++){
		if(m-1+i-n<0)continue;
		res+=f[m-1+i-n][i-2]%mods*g[i][n]%mods*jc[n-i]%mods;
	}
	cout<<res;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 5
Accepted
time: 1ms
memory: 3632kb

input:

1 1 624295285

output:

0

result:

ok single line: '0'

Test #2:

score: 5
Accepted
time: 0ms
memory: 3688kb

input:

4 684813415 564954712

output:

0

result:

ok single line: '0'

Test #3:

score: 0
Wrong Answer
time: 0ms
memory: 3640kb

input:

4 2 844826878

output:

0

result:

wrong answer 1st lines differ - expected: '24', found: '0'

Subtask #2:

score: 0
Wrong Answer

Test #6:

score: 0
Wrong Answer
time: 0ms
memory: 3692kb

input:

6 4 956647977

output:

33120

result:

wrong answer 1st lines differ - expected: '238320', found: '33120'

Subtask #3:

score: 0
Wrong Answer

Test #11:

score: 0
Wrong Answer
time: 1ms
memory: 3752kb

input:

48 26 424594716

output:

4933188624

result:

wrong answer 1st lines differ - expected: '362283012', found: '4933188624'

Subtask #4:

score: 0
Wrong Answer

Test #16:

score: 50
Accepted
time: 0ms
memory: 3632kb

input:

150 526250070 197316869

output:

0

result:

ok single line: '0'

Test #17:

score: 0
Wrong Answer
time: 14ms
memory: 4052kb

input:

149 116 671784452

output:

38048766508

result:

wrong answer 1st lines differ - expected: '18945228', found: '38048766508'