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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 |
---|---|---|---|---|---|---|---|---|---|
#516767 | #8047. DFS Order 4 | JohnAlfnov | AC ✓ | 575ms | 6452kb | C++14 | 612b | 2024-08-12 21:19:12 | 2024-08-12 21:19:13 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int mod;
int powdv(int x,int y=mod-2){
int ans=1;
while(y){
if(y&1)ans=1ll*ans*x%mod;
y>>=1,x=1ll*x*x%mod;
}
return ans;
}
int ny[805],f[805][805];
int main(){
int n;
scanf("%d%d",&n,&mod);
for(int i=1;i<=n;++i)ny[i]=powdv(i);
f[0][0]=1;
for(int i=1;i<=n;++i)for(int j=0;j<=n-i;++j){
f[i][j]=1ll*ny[i+j]*f[i-1][0]%mod;
for(int k=2;k<i;++k){
f[i][j]=(f[i][j]+1ll*ny[i+j]*(f[k-1][0]-f[k-1][i+j-k]+mod)%mod*f[i-k][j])%mod;
}
}
int ans=f[n-1][0];
for(int i=1;i<n;++i)ans=1ll*ans*i%mod;
printf("%d\n",ans);
return 0;
}
这程序好像有点Bug,我给组数据试试?
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3960kb
input:
4 114514199
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
10 998244353
output:
11033
result:
ok 1 number(s): "11033"
Test #3:
score: 0
Accepted
time: 2ms
memory: 4068kb
input:
100 1000000007
output:
270904395
result:
ok 1 number(s): "270904395"
Test #4:
score: 0
Accepted
time: 479ms
memory: 6256kb
input:
756 1001338769
output:
901942543
result:
ok 1 number(s): "901942543"
Test #5:
score: 0
Accepted
time: 546ms
memory: 6360kb
input:
793 1009036033
output:
301770320
result:
ok 1 number(s): "301770320"
Test #6:
score: 0
Accepted
time: 486ms
memory: 6336kb
input:
759 1005587659
output:
846376219
result:
ok 1 number(s): "846376219"
Test #7:
score: 0
Accepted
time: 513ms
memory: 6192kb
input:
773 1007855479
output:
1398019
result:
ok 1 number(s): "1398019"
Test #8:
score: 0
Accepted
time: 467ms
memory: 6308kb
input:
751 1006730639
output:
321287237
result:
ok 1 number(s): "321287237"
Test #9:
score: 0
Accepted
time: 535ms
memory: 6244kb
input:
778 1007760653
output:
430322899
result:
ok 1 number(s): "430322899"
Test #10:
score: 0
Accepted
time: 561ms
memory: 6400kb
input:
798 1007543827
output:
688720826
result:
ok 1 number(s): "688720826"
Test #11:
score: 0
Accepted
time: 575ms
memory: 6452kb
input:
796 1004841413
output:
258829347
result:
ok 1 number(s): "258829347"
Test #12:
score: 0
Accepted
time: 526ms
memory: 6388kb
input:
775 1005185189
output:
744278608
result:
ok 1 number(s): "744278608"
Test #13:
score: 0
Accepted
time: 561ms
memory: 6276kb
input:
800 1006012831
output:
508549367
result:
ok 1 number(s): "508549367"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
1 1001338769
output:
1
result:
ok 1 number(s): "1"
Test #15:
score: 0
Accepted
time: 1ms
memory: 3872kb
input:
2 1001338769
output:
1
result:
ok 1 number(s): "1"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3828kb
input:
9 1009036033
output:
1780
result:
ok 1 number(s): "1780"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
14 1001338769
output:
43297358
result:
ok 1 number(s): "43297358"
Extra Test:
score: 0
Extra Test Passed