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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#724772#7733. Cool, It’s Yesterday Four Times Moreyangtb2024ML 11ms6064kbC++142.1kb2024-11-08 15:00:402024-11-08 15:00:40

Judging History

你现在查看的是最新测评结果

  • [2024-11-08 15:00:40]
  • 评测
  • 测评结果:ML
  • 用时:11ms
  • 内存:6064kb
  • [2024-11-08 15:00:40]
  • 提交

answer

#include <bits/stdc++.h>

#define rep(i, l, r) for(int i = l; i <= r; i++)
#define per(i, l, r) for(int i = r; i >= l; i--)

using namespace std;

const int N = 1005;

int n, m, a[N][N];

int col[N][N], bel;

bitset<N * 10> c;

int get(int x, int y) {
	return (x + n + 1) * 3 * m + y;
}

void dfs(int x, int y) {
	if(col[x][y]) {
		return;
	}
	
	col[x][y] = bel;
	
	if(x != 1 && !a[x - 1][y]) {
		dfs(x - 1, y);
	}
	
	if(x != n && !a[x + 1][y]) {
		dfs(x + 1, y);
	}
	
	if(y != 1 && !a[x][y - 1]) {
		dfs(x, y - 1);
	}
	
	if(y != m && !a[x][y + 1]) {
		dfs(x, y + 1);
	}
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int T;
	cin >> T;
	
	while(T--) {
		cin >> n >> m;
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				char x;
				cin >> x;
				a[i][j] = (x == 'O');
			}
		}
		
		vector<bitset<N * 10>> s[N];
		bitset<N * 10> kk;
		
		rep(i, 1, n) {
			rep(j, 0, m) {
				s[i].push_back(kk);
			}
		}
		
		rep(i, -n, n * 2) {
			rep(j, -m + 1, m * 2) {
				c[get(i, j)] = (i >= n + 1 || i <= 0 ? 1 : (j <= m && j >= 1 ? a[i][j] : 1));
			}
		}
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				col[i][j] = 0;
			}
		}
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				if(!a[i][j]) {
					s[i][j] = c;
				}
			}
		}
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				if(!a[i][j]) {
					bel++;
					dfs(i, j);
				}
			}
		}
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				if(!a[i][j]) {
					rep(k, 1, n) {
						rep(t, 1, m) {
							if(col[i][j] == col[k][t]) {
								s[i][j] |= (i <= k ? 
									((j <= t ? (c >> (t - j)) : (c << (j - t))) >> ((k - i) * m * 3)) : 
									((j <= t ? (c >> (t - j)) : (c << (j - t))) << ((i - k) * m * 3)));
							}
						}
					}
				}
			}
		}
		
		int ans = 0;
		
		rep(i, 1, n) {
			rep(j, 1, m) {
				if(!a[i][j]) {
					int sum = 0;
					
					rep(k, 1, n) {
						rep(t, 1, m) {
							if(k == i && t == j) {
								continue;
							}
							
							sum += s[i][j][get(k, t)];
						}
					}
					
					if(sum == n * m - 1) {
						ans++;
					}
				}
			}
		}
		
		cout << ans << '\n';
	}
	
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 5716kb

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: 5944kb

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: 0
Accepted
time: 11ms
memory: 6064kb

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
45
20
29
18
21
27
28
35
13
20
17
32
29
28
23
23
23
24
18
28
17
35
24

result:

ok 50 lines

Test #4:

score: -100
Memory Limit Exceeded

input:

5
1 1000
....O..OO..O..O..OO...OOO.OOOO.O...O....OOOOO.....OO..OOOO.O..O....OOOO..OO..OOOO......O.O.O..O..OO.OO.OO.O....O.O.O.O.O.OO..O.O.OO..O..OO..O.OOO...O...O.O.O..O....O.OO...O..O...O.OOO..OO.O..O.OO.O.O..OOOO..O.OO.O.O....O.OO.......OOOO....O.O.O.O..OOO.O.OO.OOO..O...O.O.O.O.OO.O.OOOO...O.OO.....

output:


result: