QOJ.ac
QOJ
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #360314 | #1089. Biological Software Utilities | SolitaryDream# | AC ✓ | 2ms | 3740kb | C++17 | 622b | 2024-03-21 17:17:30 | 2024-03-21 17:17:31 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N=1e6+1e3+7,P=998244353;
int qpow(int a,int b)
{
int ret=1;
while(b)
{
if(b&1)
ret=ret*a%P;
b>>=1;
a=a*a%P;
}
return ret;
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int n;
cin>>n;
if(n%2==1)
cout<<0<<"\n";
else
{
int ans=1;
for(int i=1;i<=n;i+=2)
ans=ans*i%P;
ans=ans*qpow(2,n/2)%P;
ans=ans*qpow(n,(n/2-2+P-1)%(P-1))%P;
cout<<ans<<"\n";
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3604kb
input:
1
output:
0
result:
ok 1 number(s): "0"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
2
output:
1
result:
ok 1 number(s): "1"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3740kb
input:
3
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
4
output:
12
result:
ok 1 number(s): "12"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3616kb
input:
7788
output:
178152092
result:
ok 1 number(s): "178152092"
Test #6:
score: 0
Accepted
time: 2ms
memory: 3672kb
input:
1000000
output:
178454094
result:
ok 1 number(s): "178454094"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
12346
output:
751958800
result:
ok 1 number(s): "751958800"
Test #8:
score: 0
Accepted
time: 2ms
memory: 3668kb
input:
999996
output:
690785929
result:
ok 1 number(s): "690785929"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
6
output:
720
result:
ok 1 number(s): "720"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3728kb
input:
10
output:
30240000
result:
ok 1 number(s): "30240000"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3676kb
input:
99
output:
0
result:
ok 1 number(s): "0"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
100
output:
934178078
result:
ok 1 number(s): "934178078"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
20
output:
245111072
result:
ok 1 number(s): "245111072"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3724kb
input:
38745
output:
0
result:
ok 1 number(s): "0"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3724kb
input:
3848
output:
928659530
result:
ok 1 number(s): "928659530"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
347835
output:
0
result:
ok 1 number(s): "0"
Test #17:
score: 0
Accepted
time: 1ms
memory: 3684kb
input:
234234
output:
745247398
result:
ok 1 number(s): "745247398"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
12
output:
818069491
result:
ok 1 number(s): "818069491"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
98
output:
648803799
result:
ok 1 number(s): "648803799"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
124
output:
159487965
result:
ok 1 number(s): "159487965"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
1024
output:
318674437
result:
ok 1 number(s): "318674437"
Test #22:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
524288
output:
495260023
result:
ok 1 number(s): "495260023"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
524289
output:
0
result:
ok 1 number(s): "0"
Test #24:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
999999
output:
0
result:
ok 1 number(s): "0"
Test #25:
score: 0
Accepted
time: 0ms
memory: 3676kb
input:
999997
output:
0
result:
ok 1 number(s): "0"