QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#339107 | #6143. 滚榜 | LYT0122 | 100 ✓ | 451ms | 456760kb | C++14 | 1.4kb | 2024-02-26 19:23:20 | 2024-02-26 19:23:21 |
Judging History
answer
#include <iostream>
#include <cstring>
#include <algorithm>
#include <cmath>
using namespace std;
const int N=14,M=505;
typedef long long int ll;
int n,m,a[N],p[1<<N],maxid;
ll f[1<<N][N][M],ans;
inline int read()
{
int x=0,f=1;char c=getchar();
while(c<'0' || c>'9') {if(c=='-') f=-1;c=getchar();}
while(c>='0' && c<='9') {x=x*10+c-48,c=getchar();}
return x*f;
}
inline int lowbit(int x)
{
return x&-x;
}
int main()
{
n=read(),m=read();
for(int i=1;i<=n;i++) a[i]=read();
a[0]=-1;
for(int i=1;i<=n;i++)
{
p[1<<(i-1)]=i;
if(a[i]>a[maxid]) maxid=i;
}
for(int i=1;i<=n;i++)
{
int s=n*(a[maxid]-a[i]+(maxid<i));
if(s<=m) f[1<<(i-1)][i][s]=1;
}
for(int S=1;S<(1<<n);S++)
{
int cnt=0;
for(int j=1;j<=n;j++)
if((S>>(j-1))&1) cnt++;
for(int P=S;P!=0;P-=lowbit(P))
{
int pos=p[lowbit(P)];
for(int i=0;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
if((S>>(j-1))&1) continue;
int s=i+max(a[pos]-a[j]+(pos<j),0)*(n-cnt);
if(s<=m) f[S|(1<<j-1)][j][s]+=f[S][pos][i];
}
}
}
}
for(int i=1;i<=n;i++)
for(int j=0;j<=m;j++) ans+=f[(1<<n)-1][i][j];
printf("%lld",ans);
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 5
Accepted
time: 0ms
memory: 3772kb
input:
2 8 8950 8954
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 5
Accepted
time: 0ms
memory: 3884kb
input:
2 10 8841 8843
output:
2
result:
ok 1 number(s): "2"
Test #3:
score: 5
Accepted
time: 0ms
memory: 3896kb
input:
3 9 8765 8761 8765
output:
2
result:
ok 1 number(s): "2"
Test #4:
score: 5
Accepted
time: 0ms
memory: 3776kb
input:
3 8 8385 8385 8387
output:
6
result:
ok 1 number(s): "6"
Test #5:
score: 5
Accepted
time: 0ms
memory: 5848kb
input:
3 9 8581 8585 8582
output:
2
result:
ok 1 number(s): "2"
Test #6:
score: 5
Accepted
time: 2ms
memory: 18160kb
input:
8 100 8856 8864 8858 8860 8856 8863 8859 8857
output:
17589
result:
ok 1 number(s): "17589"
Test #7:
score: 5
Accepted
time: 0ms
memory: 18308kb
input:
8 100 8238 8239 8245 8244 8245 8244 8238 8244
output:
32475
result:
ok 1 number(s): "32475"
Test #8:
score: 5
Accepted
time: 4ms
memory: 18448kb
input:
8 100 9804 9806 9807 9802 9801 9803 9801 9806
output:
37012
result:
ok 1 number(s): "37012"
Test #9:
score: 5
Accepted
time: 7ms
memory: 61232kb
input:
10 200 8002 8014 8011 8013 8002 8003 8002 8016 8009 8004
output:
606309
result:
ok 1 number(s): "606309"
Test #10:
score: 5
Accepted
time: 18ms
memory: 61188kb
input:
10 200 8324 8323 8328 8322 8325 8328 8328 8323 8334 8323
output:
2504995
result:
ok 1 number(s): "2504995"
Test #11:
score: 5
Accepted
time: 17ms
memory: 59440kb
input:
10 200 9416 9415 9417 9404 9408 9409 9410 9416 9415 9411
output:
2553164
result:
ok 1 number(s): "2553164"
Test #12:
score: 5
Accepted
time: 17ms
memory: 59488kb
input:
10 200 9422 9430 9425 9425 9425 9423 9431 9428 9432 9434
output:
2687280
result:
ok 1 number(s): "2687280"
Test #13:
score: 5
Accepted
time: 113ms
memory: 231084kb
input:
12 300 9281 9292 9279 9280 9289 9291 9285 9279 9280 9281 9290 9281
output:
197821618
result:
ok 1 number(s): "197821618"
Test #14:
score: 5
Accepted
time: 114ms
memory: 231260kb
input:
12 300 9737 9726 9731 9736 9723 9727 9722 9732 9736 9733 9737 9728
output:
196607151
result:
ok 1 number(s): "196607151"
Test #15:
score: 5
Accepted
time: 109ms
memory: 229292kb
input:
12 300 8707 8708 8712 8704 8705 8704 8716 8711 8713 8712 8702 8710
output:
337047589
result:
ok 1 number(s): "337047589"
Test #16:
score: 5
Accepted
time: 112ms
memory: 229448kb
input:
12 300 9200 9194 9191 9195 9197 9192 9206 9206 9197 9198 9192 9202
output:
164570332
result:
ok 1 number(s): "164570332"
Test #17:
score: 5
Accepted
time: 451ms
memory: 456516kb
input:
13 500 8217 8233 8238 8217 8237 8237 8217 8217 8230 8234 8225 8223 8220
output:
1500488819
result:
ok 1 number(s): "1500488819"
Test #18:
score: 5
Accepted
time: 420ms
memory: 456760kb
input:
13 500 9781 9780 9772 9779 9785 9788 9788 9777 9791 9784 9782 9777 9768
output:
4627756434
result:
ok 1 number(s): "4627756434"
Test #19:
score: 5
Accepted
time: 420ms
memory: 456676kb
input:
13 500 8096 8078 8103 8104 8085 8089 8081 8085 8102 8095 8097 8100 8090
output:
1388414345
result:
ok 1 number(s): "1388414345"
Test #20:
score: 5
Accepted
time: 429ms
memory: 456356kb
input:
13 500 8739 8728 8743 8727 8730 8735 8733 8738 8731 8743 8728 8722 8722
output:
3106123719
result:
ok 1 number(s): "3106123719"
Extra Test:
score: 0
Extra Test Passed