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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#734343 | #5810. Doubly-sorted Grid | lichenyu_ac | 10 | 19ms | 18712kb | C++14 | 1.4kb | 2024-11-11 09:07:01 | 2024-11-11 09:07:02 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=35,M=1<<20,mod=1e4+7;
int n,m;
int f[2][M],tmp[M],val[M];
char g[N][N];
// vector<int> v;
int sta[N],top;
void Add(int &x,int y){
x+=y;
if(x>=mod)x-=mod;
}
void solve(int testCase){
memset(f,0,sizeof(f));
memset(tmp,0,sizeof(tmp));
scanf("%d%d",&n,&m);
for(int i=0;i<n;i++)scanf("%s",g[i]);
f[0][(1<<m)-1]=1;
int now=0;
for(int i=0;i<26;i++){
now^=1;
for(int s=0;s<1<<(n+m);s++){
if(__builtin_popcount(s)!=m)continue;
f[now][s]=f[now^1][s];
// v.clear();
top=0;
int x=-1,y=m-1;
for(int j=0;j<n+m-1;j++){
(s>>j&1) ? y-- : x++;
if((s>>j&3)==2){
if(g[x][y]=='.'||g[x][y]==i+'a')sta[top++]=3<<j;
}
}
for(int j=1;j<1<<top;j++){
if(j==(j&-j))tmp[j]=sta[val[j]];
else tmp[j]=tmp[j^(j&-j)]^tmp[j&-j];
if(__builtin_popcount(j)&1)Add(f[now][s],f[now][tmp[j]^s]);
else Add(f[now][s],mod-f[now][tmp[j]^s]);
}
}
}
printf("Case #%d: %d\n",testCase,f[now][((1<<m)-1)<<n]);
}
int main(){
for(int i=1;i<25;i++)
if((1<<i)<M)val[1<<i]=i;
int T;scanf("%d",&T);
for(int i=1;i<=T;i++)solve(i);
return 0;
}
Details
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Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 19ms
memory: 18712kb
input:
40 4 4 .... .... .... .... 4 4 abcd bcde cdef defg 4 4 bbcc ccde cdef deef 4 4 .... .... .r.. ..e. 3 4 .... .... ...g 1 3 f.. 2 2 .b bb 2 3 ... ..f 4 4 .... .... ..t. ..d. 3 3 .gn ... ... 4 4 ...a ...b ...c ...d 4 4 ...b ..bb .bbb bbbb 4 4 a... .b.. ..c. ...d 3 3 c.. glw ..w 1 4 .... 1 3 d.v 4 2 .. ...
output:
Case #1: 7285 Case #2: 1 Case #3: 1 Case #4: 0 Case #5: 718 Case #6: 231 Case #7: 2 Case #8: 686 Case #9: 0 Case #10: 3500 Case #11: 330 Case #12: 14 Case #13: 4096 Case #14: 2756 Case #15: 3737 Case #16: 19 Case #17: 8175 Case #18: 3737 Case #19: 7279 Case #20: 256 Case #21: 23 Case #22: 7569 Case ...
result:
ok 40 lines
Subtask #2:
score: 0
Time Limit Exceeded
Test #2:
score: 0
Time Limit Exceeded
input:
40 5 10 .......... .......... .......... .......... .......... 10 10 ....a..... ....c..... ....g..... ....j..... ....l..... ....m..... ....n..... ....q..... ....t..... ....v..... 10 10 .......... .......... .......... .......... .......... .......... .......... .......... ...ok..... .......... 9 10 ...