QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#782905 | #9561. 树数叔术 | FanyuX | 20 | 378ms | 16648kb | C++14 | 1.1kb | 2024-11-25 22:05:44 | 2024-11-25 22:05:45 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ri register
#define pii pair<int,int>
#define F first
#define S second
#define pb push_back
const int inf=0x3f3f3f3f;
inline int rd(){
int x=0,y=1;char c=getchar();
for(;c<'0'||c>'9';c=getchar())if(c=='-')y=-1;
for(;c>='0'&&c<='9';c=getchar())x=(x<<1)+(x<<3)+(c^48);
return x*y;
}
const int N=150+5;
int n,m,mod,c[N][N],fac[N],f[N][N][N];
void add(int &x,int y){
x+=y;if(x>=mod)x-=mod;
}
signed main(){
n=rd();m=rd();mod=rd();
if(m>=n)return puts("0"),0;
fac[0]=c[0][0]=f[0][1][0]=1;
for(int i=1;i<=n;i++){
fac[i]=1ll*fac[i-1]*i%mod;
c[i][0]=1;
for(int j=1;j<=i;j++)
c[i][j]=(c[i-1][j]+c[i-1][j-1])%mod;
}
for(int i=1;i<=m;i++)
for(int j=1;j<=n;j++)
for(int k=0;k<=j;k++){
for(int l=0;l<k;l++)add(f[i][j][l],1ll*f[i-1][j][k]*c[k][l]%mod);
for(int l=1;l<=n-j;l++)add(f[i][j+l][k+l-1],1ll*f[i-1][j][k]*j%mod);
}
cout<<f[m][n][0]*fac[n]%mod<<'\n';
return 0;
}
Details
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Subtask #1:
score: 5
Accepted
Test #1:
score: 5
Accepted
time: 0ms
memory: 3636kb
input:
1 1 624295285
output:
0
result:
ok single line: '0'
Test #2:
score: 5
Accepted
time: 0ms
memory: 3696kb
input:
4 684813415 564954712
output:
0
result:
ok single line: '0'
Test #3:
score: 5
Accepted
time: 0ms
memory: 3652kb
input:
4 2 844826878
output:
24
result:
ok single line: '24'
Test #4:
score: 5
Accepted
time: 0ms
memory: 3708kb
input:
4 17724073 252218682
output:
0
result:
ok single line: '0'
Test #5:
score: 5
Accepted
time: 0ms
memory: 3724kb
input:
4 3 697681963
output:
384
result:
ok single line: '384'
Subtask #2:
score: 15
Accepted
Test #6:
score: 15
Accepted
time: 0ms
memory: 3672kb
input:
6 4 956647977
output:
238320
result:
ok single line: '238320'
Test #7:
score: 15
Accepted
time: 0ms
memory: 3708kb
input:
6 450615260 491361886
output:
0
result:
ok single line: '0'
Test #8:
score: 15
Accepted
time: 0ms
memory: 3688kb
input:
6 5 339344353
output:
933120
result:
ok single line: '933120'
Test #9:
score: 15
Accepted
time: 0ms
memory: 3544kb
input:
6 3 842228619
output:
23760
result:
ok single line: '23760'
Test #10:
score: 15
Accepted
time: 0ms
memory: 3676kb
input:
6 5 331699652
output:
933120
result:
ok single line: '933120'
Subtask #3:
score: 0
Wrong Answer
Test #11:
score: 0
Wrong Answer
time: 4ms
memory: 4400kb
input:
48 26 424594716
output:
299050116
result:
wrong answer 1st lines differ - expected: '362283012', found: '299050116'
Subtask #4:
score: 0
Wrong Answer
Test #16:
score: 50
Accepted
time: 0ms
memory: 3560kb
input:
150 526250070 197316869
output:
0
result:
ok single line: '0'
Test #17:
score: 0
Wrong Answer
time: 378ms
memory: 16648kb
input:
149 116 671784452
output:
392295776
result:
wrong answer 1st lines differ - expected: '18945228', found: '392295776'