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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 |
---|---|---|---|---|---|---|---|---|---|
#782911 | #9561. 树数叔术 | FanyuX | 100 ✓ | 488ms | 31096kb | C++14 | 1.1kb | 2024-11-25 22:07:56 | 2024-11-25 22:07:56 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int 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;
}
詳細信息
Subtask #1:
score: 5
Accepted
Test #1:
score: 5
Accepted
time: 0ms
memory: 3572kb
input:
1 1 624295285
output:
0
result:
ok single line: '0'
Test #2:
score: 5
Accepted
time: 0ms
memory: 3728kb
input:
4 684813415 564954712
output:
0
result:
ok single line: '0'
Test #3:
score: 5
Accepted
time: 0ms
memory: 3544kb
input:
4 2 844826878
output:
24
result:
ok single line: '24'
Test #4:
score: 5
Accepted
time: 0ms
memory: 3724kb
input:
4 17724073 252218682
output:
0
result:
ok single line: '0'
Test #5:
score: 5
Accepted
time: 1ms
memory: 5704kb
input:
4 3 697681963
output:
384
result:
ok single line: '384'
Subtask #2:
score: 15
Accepted
Test #6:
score: 15
Accepted
time: 0ms
memory: 3764kb
input:
6 4 956647977
output:
238320
result:
ok single line: '238320'
Test #7:
score: 15
Accepted
time: 1ms
memory: 3640kb
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: 3592kb
input:
6 3 842228619
output:
23760
result:
ok single line: '23760'
Test #10:
score: 15
Accepted
time: 0ms
memory: 3752kb
input:
6 5 331699652
output:
933120
result:
ok single line: '933120'
Subtask #3:
score: 30
Accepted
Test #11:
score: 30
Accepted
time: 2ms
memory: 5352kb
input:
48 26 424594716
output:
362283012
result:
ok single line: '362283012'
Test #12:
score: 30
Accepted
time: 0ms
memory: 3636kb
input:
49 1000000000 738885247
output:
0
result:
ok single line: '0'
Test #13:
score: 30
Accepted
time: 6ms
memory: 6016kb
input:
48 39 688951620
output:
598399200
result:
ok single line: '598399200'
Test #14:
score: 30
Accepted
time: 0ms
memory: 3524kb
input:
50 476039414 292870080
output:
0
result:
ok single line: '0'
Test #15:
score: 30
Accepted
time: 5ms
memory: 6752kb
input:
50 48 245196368
output:
123576912
result:
ok single line: '123576912'
Subtask #4:
score: 50
Accepted
Test #16:
score: 50
Accepted
time: 0ms
memory: 3564kb
input:
150 526250070 197316869
output:
0
result:
ok single line: '0'
Test #17:
score: 50
Accepted
time: 375ms
memory: 25244kb
input:
149 116 671784452
output:
18945228
result:
ok single line: '18945228'
Test #18:
score: 50
Accepted
time: 440ms
memory: 29852kb
input:
146 144 906402626
output:
438777234
result:
ok single line: '438777234'
Test #19:
score: 50
Accepted
time: 450ms
memory: 29768kb
input:
147 143 705666477
output:
70408701
result:
ok single line: '70408701'
Test #20:
score: 50
Accepted
time: 488ms
memory: 31096kb
input:
150 147 453481175
output:
336290325
result:
ok single line: '336290325'