QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #817253 | #1089. Biological Software Utilities | SGColin | AC ✓ | 8ms | 3956kb | C++20 | 580b | 2024-12-16 21:06:21 | 2024-12-16 21:06:25 |
Judging History
answer
#include <bits/stdc++.h>
#define mod 998244353
using namespace std;
inline int rd() {
int x = 0;
bool f = 0;
char c = getchar();
for (; !isdigit(c); c = getchar()) f |= (c == '-');
for (; isdigit(c); c = getchar()) x = x * 10 + (c ^ 48);
return f ? -x : x;
}
#define ll long long
ll dp[1000005];
int main() {
int n = rd();
if (n & 1) {puts("0"); return 0;}
ll res=1;
for (int i=n-1; i>=1; i-=2) res=(ll)res*i%mod;
for (int i=1; i<=n-2; i++) res=res*2%mod;
for (int i=1; i<=n/2-2; i++) res=(ll)res*(n/2)%mod;
printf("%lld\n", res);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3644kb
input:
1
output:
0
result:
ok 1 number(s): "0"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
2
output:
1
result:
ok 1 number(s): "1"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3516kb
input:
3
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
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time: 0ms
memory: 3812kb
input:
4
output:
12
result:
ok 1 number(s): "12"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3956kb
input:
7788
output:
178152092
result:
ok 1 number(s): "178152092"
Test #6:
score: 0
Accepted
time: 8ms
memory: 3812kb
input:
1000000
output:
178454094
result:
ok 1 number(s): "178454094"
Test #7:
score: 0
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time: 0ms
memory: 3956kb
input:
12346
output:
751958800
result:
ok 1 number(s): "751958800"
Test #8:
score: 0
Accepted
time: 8ms
memory: 3776kb
input:
999996
output:
690785929
result:
ok 1 number(s): "690785929"
Test #9:
score: 0
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time: 0ms
memory: 3828kb
input:
6
output:
720
result:
ok 1 number(s): "720"
Test #10:
score: 0
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time: 0ms
memory: 3820kb
input:
10
output:
30240000
result:
ok 1 number(s): "30240000"
Test #11:
score: 0
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time: 0ms
memory: 3632kb
input:
99
output:
0
result:
ok 1 number(s): "0"
Test #12:
score: 0
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time: 0ms
memory: 3812kb
input:
100
output:
934178078
result:
ok 1 number(s): "934178078"
Test #13:
score: 0
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time: 0ms
memory: 3776kb
input:
20
output:
245111072
result:
ok 1 number(s): "245111072"
Test #14:
score: 0
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time: 0ms
memory: 3700kb
input:
38745
output:
0
result:
ok 1 number(s): "0"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
3848
output:
928659530
result:
ok 1 number(s): "928659530"
Test #16:
score: 0
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time: 0ms
memory: 3712kb
input:
347835
output:
0
result:
ok 1 number(s): "0"
Test #17:
score: 0
Accepted
time: 2ms
memory: 3760kb
input:
234234
output:
745247398
result:
ok 1 number(s): "745247398"
Test #18:
score: 0
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time: 0ms
memory: 3820kb
input:
12
output:
818069491
result:
ok 1 number(s): "818069491"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3768kb
input:
98
output:
648803799
result:
ok 1 number(s): "648803799"
Test #20:
score: 0
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time: 0ms
memory: 3844kb
input:
124
output:
159487965
result:
ok 1 number(s): "159487965"
Test #21:
score: 0
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time: 0ms
memory: 3772kb
input:
1024
output:
318674437
result:
ok 1 number(s): "318674437"
Test #22:
score: 0
Accepted
time: 4ms
memory: 3828kb
input:
524288
output:
495260023
result:
ok 1 number(s): "495260023"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3516kb
input:
524289
output:
0
result:
ok 1 number(s): "0"
Test #24:
score: 0
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time: 0ms
memory: 3636kb
input:
999999
output:
0
result:
ok 1 number(s): "0"
Test #25:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
999997
output:
0
result:
ok 1 number(s): "0"