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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#284178 | #2892. 合法序列 | qyzyq# | AC ✓ | 4ms | 3920kb | C++14 | 1.2kb | 2023-12-16 11:38:12 | 2023-12-16 11:38:12 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=510;
const long long mod=998244353;
int n,k,shu,two,tzy;
int a[N],pd[16][2];
long long f[30],g[30],ans;
bool flag;
int main()
{
scanf("%d %d",&n,&k);
shu=(1<<(1<<k));
two=(1<<k);
for(int i=0;i<shu;i++)
{
tzy=i;
for(int j=two-1;j>=0;j--)
a[j]=(tzy&1),tzy=tzy/2;
tzy=0;
for(int j=0;j<k-1;j++)
tzy=tzy*2+a[j];
flag=true;
for(int j=k-1;j<two;j++)
{
tzy=((tzy*2+a[j])&(two-1));
if(!a[tzy])
{
flag=false;
break;
}
}
if(!flag) continue;
//只有300个,那么可以考虑 16n
for(int j=0;j<two;j++)
f[j]=0;
f[tzy]=1;
for(int j=two;j<n;j++)
{
for(int k=0;k<two;k++)
g[k]=0;
for(int k=0;k<two;k++)
{
if(!f[k]) continue;
// cout<<k<<endl;
tzy=((k*2+1)&(two-1));
// cout<<tzy<<" "<<a[tzy]<<endl;
if(a[tzy]) g[tzy]=(g[tzy]+f[k])%mod;
tzy=((k*2+0)&(two-1));
// cout<<tzy<<" "<<a[tzy]<<endl;
if(a[tzy]) g[tzy]=(g[tzy]+f[k])%mod;
}
for(int k=0;k<two;k++)
f[k]=g[k];
// cout<<endl;
}
for(int j=0;j<two;j++)
ans=(ans+f[j])%mod;
// cout<<endl;
}
printf("%lld\n",ans);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3920kb
input:
2 1
output:
1
result:
ok single line: '1'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3780kb
input:
10 3
output:
27
result:
ok single line: '27'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3776kb
input:
11 3
output:
46
result:
ok single line: '46'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
500 3
output:
402086823
result:
ok single line: '402086823'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
16 4
output:
268
result:
ok single line: '268'
Test #6:
score: 0
Accepted
time: 1ms
memory: 3776kb
input:
17 4
output:
520
result:
ok single line: '520'
Test #7:
score: 0
Accepted
time: 1ms
memory: 3920kb
input:
18 4
output:
939
result:
ok single line: '939'
Test #8:
score: 0
Accepted
time: 1ms
memory: 3712kb
input:
19 4
output:
1634
result:
ok single line: '1634'
Test #9:
score: 0
Accepted
time: 1ms
memory: 3912kb
input:
20 4
output:
2678
result:
ok single line: '2678'
Test #10:
score: 0
Accepted
time: 2ms
memory: 3736kb
input:
500 4
output:
905810545
result:
ok single line: '905810545'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
156 3
output:
158348364
result:
ok single line: '158348364'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3776kb
input:
3 1
output:
2
result:
ok single line: '2'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
419 1
output:
309520444
result:
ok single line: '309520444'
Test #14:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
148 1
output:
981388471
result:
ok single line: '981388471'
Test #15:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
208 1
output:
17788609
result:
ok single line: '17788609'
Test #16:
score: 0
Accepted
time: 4ms
memory: 3784kb
input:
325 4
output:
534470501
result:
ok single line: '534470501'
Test #17:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
478 1
output:
275981743
result:
ok single line: '275981743'
Test #18:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
437 3
output:
448979837
result:
ok single line: '448979837'
Test #19:
score: 0
Accepted
time: 0ms
memory: 3740kb
input:
260 3
output:
249722589
result:
ok single line: '249722589'
Test #20:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
406 2
output:
762498912
result:
ok single line: '762498912'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3920kb
input:
348 2
output:
718553190
result:
ok single line: '718553190'
Test #22:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
350 1
output:
496751081
result:
ok single line: '496751081'
Test #23:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
500 1
output:
154029661
result:
ok single line: '154029661'
Test #24:
score: 0
Accepted
time: 4ms
memory: 3876kb
input:
344 4
output:
864324256
result:
ok single line: '864324256'
Test #25:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
127 3
output:
306783420
result:
ok single line: '306783420'
Test #26:
score: 0
Accepted
time: 2ms
memory: 3880kb
input:
170 4
output:
138463737
result:
ok single line: '138463737'
Test #27:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
199 3
output:
988988696
result:
ok single line: '988988696'
Test #28:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
206 3
output:
992080398
result:
ok single line: '992080398'
Test #29:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
82 2
output:
755922348
result:
ok single line: '755922348'
Test #30:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
351 2
output:
285073312
result:
ok single line: '285073312'
Test #31:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
274 1
output:
609866862
result:
ok single line: '609866862'
Test #32:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
416 3
output:
49398792
result:
ok single line: '49398792'
Test #33:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
4 2
output:
2
result:
ok single line: '2'
Test #34:
score: 0
Accepted
time: 0ms
memory: 3920kb
input:
5 2
output:
4
result:
ok single line: '4'
Test #35:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
6 2
output:
7
result:
ok single line: '7'
Test #36:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
500 2
output:
255888452
result:
ok single line: '255888452'
Test #37:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
8 3
output:
8
result:
ok single line: '8'
Test #38:
score: 0
Accepted
time: 0ms
memory: 3856kb
input:
9 3
output:
15
result:
ok single line: '15'