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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#576633#7733. Cool, It’s Yesterday Four Times MoreY_J_YWA 6ms13876kbC++141.9kb2024-09-19 21:22:232024-09-19 21:22:23

Judging History

你现在查看的是最新测评结果

  • [2024-09-19 21:22:23]
  • 评测
  • 测评结果:WA
  • 用时:6ms
  • 内存:13876kb
  • [2024-09-19 21:22:23]
  • 提交

answer

#pragma GCC optimize(3,"Ofast","inline")
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
string s[2010];
const int limit=6100;
bitset<limit>BIT[1005][1005];
int dx[4]={1,0,-1,0};int dy[4]={0,-1,0,1};
int n,m;int vis[1005][1005];
void BFS(int x,int y) {
	queue<pair<int,int> >q;
	q.push({x,y});
	while(!q.empty()) {
		auto f=q.front();q.pop();
		if(vis[f.first][f.second]) continue;
		vis[f.first][f.second]=1;
		for(int i=0;i<4;i++) {
			int nx=f.first+dx[i];
			int ny=f.second+dy[i];
			if(nx<1||ny<1||nx>n||ny>m) continue;
			if(s[nx][ny]=='O') {
				continue;
			}
			int DX=nx-x+n;int DY=ny-y+m;
			BIT[x][y][DX*m+DY]=1;
			q.push({nx,ny});
		}
	}
} 
int main() {
	cin.sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int T;cin>>T;
	while(T--) {
		cin>>n>>m;
		for(int i=1;i<=n;i++) {
			cin>>s[i];
			s[i]='O'+s[i];s[i]+='O';
		}
		for(int i=0;i<=m+1;i++) {
			s[n+1][i]='O';
			s[0][i]='O';
		}
		for(int i=1;i<=n;i++) {
			for(int j=1;j<=m;j++) {
				if(s[i][j]=='O') continue;
				for(int k=1;k<=n;k++) {
					for(int g=1;g<=m;g++) {
						vis[k][g]=0;
					}
				}
				BFS(i,j);
//				cout<<i<<" "<<j<<":"<<endl;
//				cout<<BIT[i][j]<<endl;
			}
		}
		int ans=0;
		for(int i=1;i<=n;i++) {
			for(int j=1;j<=m;j++) {
				if(s[i][j]=='O') continue;
				int flag=0;
				for(int k=1;k<=n;k++) {
					for(int g=1;g<=m;g++) {
						if(s[k][g]=='O') continue;
						if(k==i&&g==j) continue;
//						bitset<limit>temp;
						if((BIT[i][j]&BIT[k][g])!=BIT[i][j]) {
							continue;
						}
						else {
//							cout<<i<<" "<<j<<" "<<k<<" "<<g<<endl;
							flag=1;break;	
						}
					}
				}
				if(flag==0) {
//					cout<<i<<" "<<j<<endl;
					ans++;
				}
			}
		}
		cout<<ans<<endl;
		//clear
		for(int i=1;i<=n;i++) {
			for(int j=1;j<=m;j++) {
				BIT[i][j].reset();
			}
		}
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 7816kb

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: 2ms
memory: 9908kb

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: 6ms
memory: 13876kb

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'