QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#650212 | #7733. Cool, It’s Yesterday Four Times More | Calculatelove# | WA | 2ms | 4128kb | C++14 | 1.7kb | 2024-10-18 14:00:04 | 2024-10-18 14:00:06 |
Judging History
answer
#include<cstdio>
#include<bitset>
const int N=1010;
std::bitset<N>G[N<<1];
const int dx[4]={0,1,0,-1},dy[4]={1,0,-1,0};
int n,m;
int id(int x,int y){
return (x-1)*m+y;
}
#include<queue>
struct node{
int x,y;
};
std::queue<node>q;
char s[N][N];
void bfs(int x,int y){
while(!q.empty())q.pop();
q.push(node{x,y});
int now=id(x,y);
// G[now][now]=1;
while(!q.empty()){
node p=q.front();q.pop();
for(int i=0;i<4;i++){
int nowx=p.x+dx[i],nowy=p.y+dy[i];
if(1<=nowx&&nowx<=n&&1<=nowy&&nowy<=m&&s[nowx][nowy]=='.'&&!G[now][id(nowx-x+n,nowy-y+m)]){
q.push(node{nowx,nowy});
G[now][id(nowx-x+n,nowy-y+m)]=1;
}
}
}
}
void work(){
// puts("yues");
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)scanf("%s",s[i]+1);
for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)G[id(i,j)].reset();
for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)if(s[i][j]=='.')bfs(i,j);
// for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)if(s[i][j]=='.')printf("%d ",id(i,j));
// puts("");
int ans=0;
// puts("yes");
for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)if(s[i][j]=='.'){
int flag=1;
for(int xx=1;xx<=n;xx++)for(int yy=1;yy<=m;yy++)if((xx!=i||yy!=j)&&s[xx][yy]=='.'){
if((G[id(i,j)]|G[id(xx,yy)])==G[id(xx,yy)]){
flag=0;
goto Qzong;
}
}
Qzong:;
if(flag)ans++;
// if(flag)printf("%d %d\n",i,j);
}
printf("%d\n",ans);
}
int main(){
// freopen("a.in","r",stdin);
// freopen("a.out","w",stdout);
int t;
scanf("%d",&t);
while(t--)work();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3796kb
input:
4 2 5 .OO.. O..O. 1 3 O.O 1 3 .O. 2 3 OOO OOO
output:
3 1 0 0
result:
ok 4 lines
Test #2:
score: 0
Accepted
time: 1ms
memory: 4112kb
input:
200 2 4 OOO. OO.. 2 3 OOO .O. 3 3 O.O OOO OO. 4 1 . . O O 1 2 .O 1 1 . 2 5 .OO.. .O.O. 2 1 O O 1 1 O 1 3 .OO 5 1 O O . O . 5 2 O. .. O. .O .. 5 3 ... ... .OO ..O OOO 3 5 ..O.O .O.O. .OO.O 5 2 .O OO O. O. .. 2 1 O O 3 5 .O.OO O...O ..OO. 1 5 ..... 5 1 O . O . . 5 3 OOO OO. .OO OO. O.O 2 1 O . 5 2 O. ...
output:
3 0 0 2 1 1 3 0 0 1 0 7 9 4 4 0 6 5 2 0 1 6 4 5 2 0 0 5 3 3 1 4 1 0 7 5 2 3 7 3 0 6 2 2 2 0 4 6 6 3 3 2 3 5 2 1 0 3 3 4 4 2 2 0 7 6 4 8 5 3 2 5 2 1 2 1 4 0 0 2 5 1 4 6 6 1 6 2 2 3 4 5 2 1 0 1 9 3 4 11 0 3 2 1 0 0 4 3 1 4 3 8 3 0 3 6 2 5 1 3 3 4 0 2 11 2 2 4 0 4 4 6 2 1 2 3 0 5 0 16 4 3 2 6 0 8 3 3 1...
result:
ok 200 lines
Test #3:
score: -100
Wrong Answer
time: 2ms
memory: 4128kb
input:
50 10 9 OOOO.O... O...O.OOO .....O... ..OO..O.O ...O..O.O ..OOO..O. ..OOO...O .OO.O..OO .O.O.OO.. .O..O.O.O 10 10 .O.OOO.OO. ...OOOOOOO ...O.O..O. .O.O..O... .O.O.OO..O ..OO.O..OO O....O..OO OO...OOOOO OO.OO.O..O .O.O.OOOOO 10 8 O..OOO.O O.OOOO.. O..OO.OO OO..OO.. .OOO..O. .OO.OO.O OOO..OO. ..O..OO....
output:
31 40 13 25 40 37 27 29 20 26 25 29 21 29 21 31 32 31 33 34 25 31 18 25 41 28 20 38 20 29 18 21 27 28 35 13 20 17 32 29 28 23 23 23 24 18 28 17 35 24
result:
wrong answer 28th lines differ - expected: '45', found: '38'