QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #208897 | #5749. Directed Vertex Cacti | zyxawa | WA | 6ms | 3856kb | C++23 | 450b | 2023-10-09 21:55:18 | 2023-10-09 21:55:19 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
long long n,m,k,ans=1,res=1;
const int mod=1e9+9;
long long power(long long a){
long long res=1;
for(int b=mod-2;b;b>>=1){
if(b&1) res=res*a%mod;
a=a*a%mod;
}
return res;
}
int main(){
scanf("%lld%lld",&n,&m),k=n*(n-1)/2;
for(long long i=1;i<=n;i++) ans=ans*i%mod;
for(long long i=1;i<=m;i++) ans=ans*(k-i+1)%mod,res=res*i%mod;
printf("%lld",ans*power(res)%mod);
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3704kb
input:
3 1
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3608kb
input:
4 4
output:
360
result:
ok 1 number(s): "360"
Test #3:
score: 0
Accepted
time: 2ms
memory: 3808kb
input:
39847 348708
output:
983575456
result:
ok 1 number(s): "983575456"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
1 1
output:
0
result:
ok 1 number(s): "0"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
3 2
output:
18
result:
ok 1 number(s): "18"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
3 3
output:
6
result:
ok 1 number(s): "6"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
3 4
output:
0
result:
ok 1 number(s): "0"
Test #8:
score: 0
Accepted
time: 5ms
memory: 3848kb
input:
3 1000000
output:
0
result:
ok 1 number(s): "0"
Test #9:
score: 0
Accepted
time: 1ms
memory: 3548kb
input:
4 1
output:
144
result:
ok 1 number(s): "144"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
4 2
output:
360
result:
ok 1 number(s): "360"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
4 3
output:
480
result:
ok 1 number(s): "480"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3556kb
input:
4 5
output:
144
result:
ok 1 number(s): "144"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
4 6
output:
24
result:
ok 1 number(s): "24"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3852kb
input:
5 1
output:
1200
result:
ok 1 number(s): "1200"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
5 2
output:
5400
result:
ok 1 number(s): "5400"
Test #16:
score: 0
Accepted
time: 1ms
memory: 3856kb
input:
5 3
output:
14400
result:
ok 1 number(s): "14400"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
5 4
output:
25200
result:
ok 1 number(s): "25200"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
5 5
output:
30240
result:
ok 1 number(s): "30240"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
5 6
output:
25200
result:
ok 1 number(s): "25200"
Test #20:
score: 0
Accepted
time: 1ms
memory: 3692kb
input:
5 7
output:
14400
result:
ok 1 number(s): "14400"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
5 8
output:
5400
result:
ok 1 number(s): "5400"
Test #22:
score: 0
Accepted
time: 1ms
memory: 3632kb
input:
5 9
output:
1200
result:
ok 1 number(s): "1200"
Test #23:
score: 0
Accepted
time: 1ms
memory: 3804kb
input:
5 10
output:
120
result:
ok 1 number(s): "120"
Test #24:
score: 0
Accepted
time: 1ms
memory: 3808kb
input:
1000 1
output:
533396879
result:
ok 1 number(s): "533396879"
Test #25:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
1000 100
output:
199484478
result:
ok 1 number(s): "199484478"
Test #26:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
1000 10000
output:
656650652
result:
ok 1 number(s): "656650652"
Test #27:
score: 0
Accepted
time: 5ms
memory: 3548kb
input:
1000 1000000
output:
0
result:
ok 1 number(s): "0"
Test #28:
score: -100
Wrong Answer
time: 6ms
memory: 3680kb
input:
535164 619302
output:
-668219856
result:
wrong answer 1st numbers differ - expected: '721871396', found: '-668219856'