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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#717013 | #9561. 树数叔术 | thomaswmy | 100 ✓ | 351ms | 4240kb | C++14 | 931b | 2024-11-06 16:38:03 | 2024-11-06 16:38:03 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int N=160;
typedef long long ll;
int n,V,Mod;
int fac[N];
int C[N][N];
int f[2][N][N];
int main() {
scanf("%d%d%d",&n,&V,&Mod);
if(V>=n) {
printf("0");
return 0;
}
C[0][0]=1;
fac[0]=1;
for(int i=1;i<=n;i++) {
C[i][0]=1;
fac[i]=1ll*fac[i-1]*i%Mod;
for(int j=1;j<=i;j++) C[i][j]=(C[i-1][j-1]+C[i-1][j])%Mod;
}
int now=0;
f[0][1][1]=n;
for(int i=1;i<=V;i++) {
for(int j=1;j<=n;j++) for(int k=1;k<=j;k++) f[now^1][j][k]=0;
for(int j=1;j<=n;j++) {
for(int k=1;k<=j;k++) {
if(!f[now][j][k]) continue;
for(int p=k+1;p<=j;p++) {
f[now^1][j][p]=(f[now^1][j][p]+1ll*f[now][j][k]*C[j-k][j-p]%Mod)%Mod;
}
for(int p=j+1;p<=n;p++) {
f[now^1][p][k+1]=(f[now^1][p][k+1]+1ll*f[now][j][k]*C[n-j][n-p]%Mod*fac[p-j]%Mod*j%Mod)%Mod;
}
}
}
now^=1;
}
printf("%d",f[now][n][n]);
return 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: 3784kb
input:
1 1 624295285
output:
0
result:
ok single line: '0'
Test #2:
score: 5
Accepted
time: 0ms
memory: 3828kb
input:
4 684813415 564954712
output:
0
result:
ok single line: '0'
Test #3:
score: 5
Accepted
time: 1ms
memory: 3952kb
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: 3956kb
input:
4 3 697681963
output:
384
result:
ok single line: '384'
Subtask #2:
score: 15
Accepted
Test #6:
score: 15
Accepted
time: 0ms
memory: 3756kb
input:
6 4 956647977
output:
238320
result:
ok single line: '238320'
Test #7:
score: 15
Accepted
time: 0ms
memory: 3840kb
input:
6 450615260 491361886
output:
0
result:
ok single line: '0'
Test #8:
score: 15
Accepted
time: 0ms
memory: 3912kb
input:
6 5 339344353
output:
933120
result:
ok single line: '933120'
Test #9:
score: 15
Accepted
time: 0ms
memory: 3920kb
input:
6 3 842228619
output:
23760
result:
ok single line: '23760'
Test #10:
score: 15
Accepted
time: 0ms
memory: 3896kb
input:
6 5 331699652
output:
933120
result:
ok single line: '933120'
Subtask #3:
score: 30
Accepted
Test #11:
score: 30
Accepted
time: 4ms
memory: 3928kb
input:
48 26 424594716
output:
362283012
result:
ok single line: '362283012'
Test #12:
score: 30
Accepted
time: 0ms
memory: 3760kb
input:
49 1000000000 738885247
output:
0
result:
ok single line: '0'
Test #13:
score: 30
Accepted
time: 4ms
memory: 4040kb
input:
48 39 688951620
output:
598399200
result:
ok single line: '598399200'
Test #14:
score: 30
Accepted
time: 0ms
memory: 3708kb
input:
50 476039414 292870080
output:
0
result:
ok single line: '0'
Test #15:
score: 30
Accepted
time: 4ms
memory: 3804kb
input:
50 48 245196368
output:
123576912
result:
ok single line: '123576912'
Subtask #4:
score: 50
Accepted
Test #16:
score: 50
Accepted
time: 0ms
memory: 3784kb
input:
150 526250070 197316869
output:
0
result:
ok single line: '0'
Test #17:
score: 50
Accepted
time: 341ms
memory: 4240kb
input:
149 116 671784452
output:
18945228
result:
ok single line: '18945228'
Test #18:
score: 50
Accepted
time: 315ms
memory: 4220kb
input:
146 144 906402626
output:
438777234
result:
ok single line: '438777234'
Test #19:
score: 50
Accepted
time: 320ms
memory: 4132kb
input:
147 143 705666477
output:
70408701
result:
ok single line: '70408701'
Test #20:
score: 50
Accepted
time: 351ms
memory: 4036kb
input:
150 147 453481175
output:
336290325
result:
ok single line: '336290325'