QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#737061 | #9561. 树数叔术 | ANIG | 50 | 192ms | 12312kb | C++14 | 1.0kb | 2024-11-12 14:29:35 | 2024-11-12 14:29:39 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=155;
int n,m,mods,C[N][N],f[N][N][N],jc[N];
signed main(){
cin>>n>>m>>mods;
if(m>n){
cout<<"0";
return 0;
}
for(int i=0;i<=n;i++)C[i][0]=1;
jc[0]=1;
for(int i=1;i<=n;i++){
jc[i]=jc[i-1]*i%mods;
for(int j=1;j<=n;j++){
C[i][j]=(C[i-1][j]+C[i-1][j-1])%mods;
}
}
f[0][1][0]=n;
for(int i=0;i<m;i++){
for(int j=2;j<=n;j++){
for(int k=0;k<=j;k++){
for(int l=1;l<=n;l++){
for(int r=0;r<=l&&r<=k;r++){
if(j+l-r<=n)f[i+1][j+l-r][k-r]+=f[i][j][k]*C[k][r]%mods*C[l-r+j-2][j-2]%mods*C[n-j][l-r]%mods*jc[l-r]%mods;
}
}
}
}
for(int j=1;j<=n;j++){
for(int k=0;k<=j;k++){
f[i+1][j+1][k]+=f[i][j][k]*j%mods*(n-j)%mods;
f[i+1][j+2][k+1]+=f[i][j][k]*(j-1)%mods*(n-j)%mods*(n-j-1)%mods;
}
}
for(int j=1;j<=n;j++){
for(int k=0;k<=j;k++){
f[i+1][j][k]%=mods;
// cout<<i+1<<" "<<j<<" "<<k<<" "<<f[i+1][j][k]<<endl;
}
}
}
cout<<f[m][n][0];
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 5
Accepted
Test #1:
score: 5
Accepted
time: 0ms
memory: 3608kb
input:
1 1 624295285
output:
0
result:
ok single line: '0'
Test #2:
score: 5
Accepted
time: 1ms
memory: 3572kb
input:
4 684813415 564954712
output:
0
result:
ok single line: '0'
Test #3:
score: 5
Accepted
time: 1ms
memory: 3600kb
input:
4 2 844826878
output:
24
result:
ok single line: '24'
Test #4:
score: 5
Accepted
time: 1ms
memory: 3608kb
input:
4 17724073 252218682
output:
0
result:
ok single line: '0'
Test #5:
score: 5
Accepted
time: 0ms
memory: 5716kb
input:
4 3 697681963
output:
384
result:
ok single line: '384'
Subtask #2:
score: 15
Accepted
Test #6:
score: 15
Accepted
time: 1ms
memory: 3692kb
input:
6 4 956647977
output:
238320
result:
ok single line: '238320'
Test #7:
score: 15
Accepted
time: 1ms
memory: 3576kb
input:
6 450615260 491361886
output:
0
result:
ok single line: '0'
Test #8:
score: 15
Accepted
time: 1ms
memory: 3660kb
input:
6 5 339344353
output:
933120
result:
ok single line: '933120'
Test #9:
score: 15
Accepted
time: 0ms
memory: 3624kb
input:
6 3 842228619
output:
23760
result:
ok single line: '23760'
Test #10:
score: 15
Accepted
time: 0ms
memory: 3680kb
input:
6 5 331699652
output:
933120
result:
ok single line: '933120'
Subtask #3:
score: 30
Accepted
Test #11:
score: 30
Accepted
time: 90ms
memory: 8308kb
input:
48 26 424594716
output:
362283012
result:
ok single line: '362283012'
Test #12:
score: 30
Accepted
time: 0ms
memory: 3568kb
input:
49 1000000000 738885247
output:
0
result:
ok single line: '0'
Test #13:
score: 30
Accepted
time: 131ms
memory: 11884kb
input:
48 39 688951620
output:
598399200
result:
ok single line: '598399200'
Test #14:
score: 30
Accepted
time: 0ms
memory: 3584kb
input:
50 476039414 292870080
output:
0
result:
ok single line: '0'
Test #15:
score: 30
Accepted
time: 192ms
memory: 12312kb
input:
50 48 245196368
output:
123576912
result:
ok single line: '123576912'
Subtask #4:
score: 0
Time Limit Exceeded
Test #16:
score: 50
Accepted
time: 0ms
memory: 3472kb
input:
150 526250070 197316869
output:
0
result:
ok single line: '0'
Test #17:
score: 0
Time Limit Exceeded
input:
149 116 671784452