#include "rect.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int gl[3000][3000], gr[3000][3000], gu[3000][3000], gd[3000][3000];
int lu[3000][3000], ru[3000][3000], ul[3000][3000], dl[3000][3000];
unordered_set<ll> rects;
void check(int x1, int x2, int y1, int y2) {
if (x2 < x1 || y2 < y1) return;
if (!((gl[x2][y2 + 1] + 1 == y1 && lu[x2][y2 + 1] <= x1) || (gr[x2][y1 - 1] - 1 == y2 && ru[x2][y1 - 1] <= x1))) return;
if (!((gu[x2 + 1][y2] + 1 == x1 && ul[x2 + 1][y2] <= y1) || (gd[x1 - 1][y2] - 1 == x2 && dl[x1 - 1][y2] <= y1))) return;
rects.insert(((x1 * 3000ll + x2) * 3000ll + y1) * 3000ll + y2);
}
ll count_rectangles(vector<vector<int>> a) {
int n = a.size(), m = a[0].size();
for (int i = 0; i < n; i++) {
vector<int> stck;
for (int j = 0; j < m; j++) {
while (stck.size() && a[i][stck.back()] < a[i][j]) stck.pop_back();
if (stck.size()) gl[i][j] = stck.back();
else gl[i][j] = -1;
stck.push_back(j);
}
stck.clear();
for (int j = m - 1; ~j; j--) {
while (stck.size() && a[i][stck.back()] < a[i][j]) stck.pop_back();
if (stck.size()) gr[i][j] = stck.back();
else gr[i][j] = -1;
stck.push_back(j);
}
}
for (int i = 0; i < m; i++) {
vector<int> stck;
for (int j = 0; j < n; j++) {
while (stck.size() && a[stck.back()][i] < a[j][i]) stck.pop_back();
if (stck.size()) gu[j][i] = stck.back();
else gu[j][i] = -1;
stck.push_back(j);
}
stck.clear();
for (int j = n - 1; ~j; j--) {
while (stck.size() && a[stck.back()][i] < a[j][i]) stck.pop_back();
if (stck.size()) gd[j][i] = stck.back();
else gd[j][i] = -1;
stck.push_back(j);
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (~gl[i][j]) {
if (i && gl[i - 1][j] == gl[i][j]) lu[i][j] = lu[i - 1][j];
else if (i && gr[i - 1][gl[i][j]] == j) lu[i][j] = ru[i - 1][gl[i][j]];
else lu[i][j] = i;
}
if (~gr[i][j]) {
if (i && gr[i - 1][j] == gr[i][j]) ru[i][j] = ru[i - 1][j];
else if (i && gl[i - 1][gr[i][j]] == j) ru[i][j] = lu[i - 1][gr[i][j]];
else ru[i][j] = i;
}
}
}
for (int i = 0; i < m; i++) {
for (int j = 0; j < n; j++) {
if (~gu[j][i]) {
if (i && gu[j][i - 1] == gu[j][i]) ul[j][i] = ul[j][i - 1];
else if (i && gd[gu[j][i]][i - 1] == j) ul[j][i] = dl[gu[j][i]][i - 1];
else ul[j][i] = i;
}
if (~gd[j][i]) {
if (i && gd[j][i - 1] == gd[j][i]) dl[j][i] = dl[j][i - 1];
else if (i && gu[gd[j][i]][i - 1] == j) dl[j][i] = ul[gd[j][i]][i - 1];
else dl[j][i] = i;
}
}
}
for (int i = 1; i < n - 1; i++) for (int j = 1; j < m - 1; j++) {
if (~gl[i][j + 1] && ~gu[i + 1][j]) check(gu[i + 1][j] + 1, i, gl[i][j + 1] + 1, j);
if (~gl[i][j + 1] && ~gd[i - 1][j]) check(i, gd[i - 1][j] - 1, gl[i][j + 1] + 1, j);
if (~gr[i][j - 1] && ~gu[i + 1][j]) check(gu[i + 1][j] + 1, i, j, gr[i][j - 1] - 1);
if (~gr[i][j - 1] && ~gd[i - 1][j]) check(i, gd[i - 1][j] - 1, j, gr[i][j - 1] - 1);
if (~gr[i][j - 1] && ~gd[i - 1][gr[i][j - 1] - 1])
check(i, gd[i - 1][gr[i][j - 1] - 1] - 1, j, gr[i][j - 1] - 1);
if (~gd[i - 1][j] && ~gr[gd[i - 1][j] - 1][j - 1])
check(i, gd[i - 1][j] - 1, j, gr[gd[i - 1][j] - 1][j - 1] - 1);
}
return rects.size();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
5 ms |
1408 KB |
Output is correct |
3 |
Correct |
5 ms |
1408 KB |
Output is correct |
4 |
Correct |
5 ms |
1408 KB |
Output is correct |
5 |
Correct |
5 ms |
1280 KB |
Output is correct |
6 |
Correct |
5 ms |
1280 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
768 KB |
Output is correct |
9 |
Correct |
5 ms |
1280 KB |
Output is correct |
10 |
Correct |
5 ms |
1280 KB |
Output is correct |
11 |
Correct |
6 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
640 KB |
Output is correct |
15 |
Correct |
5 ms |
640 KB |
Output is correct |
16 |
Correct |
4 ms |
384 KB |
Output is correct |
17 |
Correct |
4 ms |
384 KB |
Output is correct |
18 |
Correct |
4 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
1280 KB |
Output is correct |
20 |
Correct |
5 ms |
1280 KB |
Output is correct |
21 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
5 ms |
1408 KB |
Output is correct |
3 |
Correct |
5 ms |
1408 KB |
Output is correct |
4 |
Correct |
5 ms |
1408 KB |
Output is correct |
5 |
Correct |
5 ms |
1280 KB |
Output is correct |
6 |
Correct |
5 ms |
1280 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
768 KB |
Output is correct |
9 |
Correct |
5 ms |
1280 KB |
Output is correct |
10 |
Correct |
5 ms |
1280 KB |
Output is correct |
11 |
Correct |
6 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
640 KB |
Output is correct |
15 |
Correct |
5 ms |
640 KB |
Output is correct |
16 |
Correct |
4 ms |
384 KB |
Output is correct |
17 |
Correct |
7 ms |
3364 KB |
Output is correct |
18 |
Correct |
7 ms |
3456 KB |
Output is correct |
19 |
Correct |
7 ms |
3328 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
7 ms |
3200 KB |
Output is correct |
23 |
Correct |
7 ms |
3200 KB |
Output is correct |
24 |
Correct |
6 ms |
3072 KB |
Output is correct |
25 |
Correct |
4 ms |
384 KB |
Output is correct |
26 |
Correct |
4 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
1280 KB |
Output is correct |
28 |
Correct |
5 ms |
1280 KB |
Output is correct |
29 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
5 ms |
1408 KB |
Output is correct |
3 |
Correct |
5 ms |
1408 KB |
Output is correct |
4 |
Correct |
5 ms |
1408 KB |
Output is correct |
5 |
Correct |
5 ms |
1280 KB |
Output is correct |
6 |
Correct |
5 ms |
1280 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
768 KB |
Output is correct |
9 |
Correct |
5 ms |
1280 KB |
Output is correct |
10 |
Correct |
5 ms |
1280 KB |
Output is correct |
11 |
Correct |
6 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
640 KB |
Output is correct |
15 |
Correct |
5 ms |
640 KB |
Output is correct |
16 |
Correct |
4 ms |
384 KB |
Output is correct |
17 |
Correct |
7 ms |
3364 KB |
Output is correct |
18 |
Correct |
7 ms |
3456 KB |
Output is correct |
19 |
Correct |
7 ms |
3328 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
7 ms |
3200 KB |
Output is correct |
23 |
Correct |
7 ms |
3200 KB |
Output is correct |
24 |
Correct |
6 ms |
3072 KB |
Output is correct |
25 |
Correct |
16 ms |
9904 KB |
Output is correct |
26 |
Correct |
16 ms |
9904 KB |
Output is correct |
27 |
Correct |
20 ms |
9904 KB |
Output is correct |
28 |
Correct |
14 ms |
8448 KB |
Output is correct |
29 |
Correct |
17 ms |
8960 KB |
Output is correct |
30 |
Correct |
19 ms |
9088 KB |
Output is correct |
31 |
Correct |
17 ms |
8960 KB |
Output is correct |
32 |
Correct |
17 ms |
8960 KB |
Output is correct |
33 |
Correct |
4 ms |
384 KB |
Output is correct |
34 |
Correct |
4 ms |
384 KB |
Output is correct |
35 |
Correct |
5 ms |
1280 KB |
Output is correct |
36 |
Correct |
5 ms |
1280 KB |
Output is correct |
37 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
5 ms |
1408 KB |
Output is correct |
3 |
Correct |
5 ms |
1408 KB |
Output is correct |
4 |
Correct |
5 ms |
1408 KB |
Output is correct |
5 |
Correct |
5 ms |
1280 KB |
Output is correct |
6 |
Correct |
5 ms |
1280 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
768 KB |
Output is correct |
9 |
Correct |
5 ms |
1280 KB |
Output is correct |
10 |
Correct |
5 ms |
1280 KB |
Output is correct |
11 |
Correct |
6 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
640 KB |
Output is correct |
15 |
Correct |
5 ms |
640 KB |
Output is correct |
16 |
Correct |
4 ms |
384 KB |
Output is correct |
17 |
Correct |
7 ms |
3364 KB |
Output is correct |
18 |
Correct |
7 ms |
3456 KB |
Output is correct |
19 |
Correct |
7 ms |
3328 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
7 ms |
3200 KB |
Output is correct |
23 |
Correct |
7 ms |
3200 KB |
Output is correct |
24 |
Correct |
6 ms |
3072 KB |
Output is correct |
25 |
Correct |
16 ms |
9904 KB |
Output is correct |
26 |
Correct |
16 ms |
9904 KB |
Output is correct |
27 |
Correct |
20 ms |
9904 KB |
Output is correct |
28 |
Correct |
14 ms |
8448 KB |
Output is correct |
29 |
Correct |
17 ms |
8960 KB |
Output is correct |
30 |
Correct |
19 ms |
9088 KB |
Output is correct |
31 |
Correct |
17 ms |
8960 KB |
Output is correct |
32 |
Correct |
17 ms |
8960 KB |
Output is correct |
33 |
Correct |
81 ms |
40056 KB |
Output is correct |
34 |
Correct |
81 ms |
40056 KB |
Output is correct |
35 |
Correct |
77 ms |
40056 KB |
Output is correct |
36 |
Correct |
80 ms |
40056 KB |
Output is correct |
37 |
Correct |
185 ms |
66440 KB |
Output is correct |
38 |
Correct |
177 ms |
66440 KB |
Output is correct |
39 |
Correct |
184 ms |
66440 KB |
Output is correct |
40 |
Correct |
171 ms |
63624 KB |
Output is correct |
41 |
Correct |
96 ms |
42744 KB |
Output is correct |
42 |
Correct |
113 ms |
43816 KB |
Output is correct |
43 |
Correct |
149 ms |
48828 KB |
Output is correct |
44 |
Correct |
163 ms |
48988 KB |
Output is correct |
45 |
Correct |
85 ms |
35852 KB |
Output is correct |
46 |
Correct |
73 ms |
24584 KB |
Output is correct |
47 |
Correct |
153 ms |
48824 KB |
Output is correct |
48 |
Correct |
165 ms |
49084 KB |
Output is correct |
49 |
Correct |
4 ms |
384 KB |
Output is correct |
50 |
Correct |
4 ms |
384 KB |
Output is correct |
51 |
Correct |
5 ms |
1280 KB |
Output is correct |
52 |
Correct |
5 ms |
1280 KB |
Output is correct |
53 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
768 KB |
Output is correct |
2 |
Correct |
5 ms |
768 KB |
Output is correct |
3 |
Correct |
5 ms |
640 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
6 ms |
640 KB |
Output is correct |
6 |
Correct |
6 ms |
640 KB |
Output is correct |
7 |
Correct |
6 ms |
640 KB |
Output is correct |
8 |
Correct |
6 ms |
640 KB |
Output is correct |
9 |
Correct |
6 ms |
640 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
512 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
640 KB |
Output is correct |
2 |
Correct |
539 ms |
144624 KB |
Output is correct |
3 |
Correct |
1208 ms |
294844 KB |
Output is correct |
4 |
Correct |
1213 ms |
296420 KB |
Output is correct |
5 |
Correct |
1222 ms |
296380 KB |
Output is correct |
6 |
Correct |
421 ms |
140664 KB |
Output is correct |
7 |
Correct |
864 ms |
281336 KB |
Output is correct |
8 |
Correct |
907 ms |
284280 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
5 ms |
1408 KB |
Output is correct |
3 |
Correct |
5 ms |
1408 KB |
Output is correct |
4 |
Correct |
5 ms |
1408 KB |
Output is correct |
5 |
Correct |
5 ms |
1280 KB |
Output is correct |
6 |
Correct |
5 ms |
1280 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
768 KB |
Output is correct |
9 |
Correct |
5 ms |
1280 KB |
Output is correct |
10 |
Correct |
5 ms |
1280 KB |
Output is correct |
11 |
Correct |
6 ms |
1280 KB |
Output is correct |
12 |
Correct |
5 ms |
1280 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
640 KB |
Output is correct |
15 |
Correct |
5 ms |
640 KB |
Output is correct |
16 |
Correct |
4 ms |
384 KB |
Output is correct |
17 |
Correct |
7 ms |
3364 KB |
Output is correct |
18 |
Correct |
7 ms |
3456 KB |
Output is correct |
19 |
Correct |
7 ms |
3328 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
7 ms |
3200 KB |
Output is correct |
23 |
Correct |
7 ms |
3200 KB |
Output is correct |
24 |
Correct |
6 ms |
3072 KB |
Output is correct |
25 |
Correct |
16 ms |
9904 KB |
Output is correct |
26 |
Correct |
16 ms |
9904 KB |
Output is correct |
27 |
Correct |
20 ms |
9904 KB |
Output is correct |
28 |
Correct |
14 ms |
8448 KB |
Output is correct |
29 |
Correct |
17 ms |
8960 KB |
Output is correct |
30 |
Correct |
19 ms |
9088 KB |
Output is correct |
31 |
Correct |
17 ms |
8960 KB |
Output is correct |
32 |
Correct |
17 ms |
8960 KB |
Output is correct |
33 |
Correct |
81 ms |
40056 KB |
Output is correct |
34 |
Correct |
81 ms |
40056 KB |
Output is correct |
35 |
Correct |
77 ms |
40056 KB |
Output is correct |
36 |
Correct |
80 ms |
40056 KB |
Output is correct |
37 |
Correct |
185 ms |
66440 KB |
Output is correct |
38 |
Correct |
177 ms |
66440 KB |
Output is correct |
39 |
Correct |
184 ms |
66440 KB |
Output is correct |
40 |
Correct |
171 ms |
63624 KB |
Output is correct |
41 |
Correct |
96 ms |
42744 KB |
Output is correct |
42 |
Correct |
113 ms |
43816 KB |
Output is correct |
43 |
Correct |
149 ms |
48828 KB |
Output is correct |
44 |
Correct |
163 ms |
48988 KB |
Output is correct |
45 |
Correct |
85 ms |
35852 KB |
Output is correct |
46 |
Correct |
73 ms |
24584 KB |
Output is correct |
47 |
Correct |
153 ms |
48824 KB |
Output is correct |
48 |
Correct |
165 ms |
49084 KB |
Output is correct |
49 |
Correct |
5 ms |
768 KB |
Output is correct |
50 |
Correct |
5 ms |
768 KB |
Output is correct |
51 |
Correct |
5 ms |
640 KB |
Output is correct |
52 |
Correct |
4 ms |
384 KB |
Output is correct |
53 |
Correct |
6 ms |
640 KB |
Output is correct |
54 |
Correct |
6 ms |
640 KB |
Output is correct |
55 |
Correct |
6 ms |
640 KB |
Output is correct |
56 |
Correct |
6 ms |
640 KB |
Output is correct |
57 |
Correct |
6 ms |
640 KB |
Output is correct |
58 |
Correct |
5 ms |
384 KB |
Output is correct |
59 |
Correct |
5 ms |
512 KB |
Output is correct |
60 |
Correct |
5 ms |
640 KB |
Output is correct |
61 |
Correct |
539 ms |
144624 KB |
Output is correct |
62 |
Correct |
1208 ms |
294844 KB |
Output is correct |
63 |
Correct |
1213 ms |
296420 KB |
Output is correct |
64 |
Correct |
1222 ms |
296380 KB |
Output is correct |
65 |
Correct |
421 ms |
140664 KB |
Output is correct |
66 |
Correct |
864 ms |
281336 KB |
Output is correct |
67 |
Correct |
907 ms |
284280 KB |
Output is correct |
68 |
Correct |
1045 ms |
269152 KB |
Output is correct |
69 |
Correct |
958 ms |
269048 KB |
Output is correct |
70 |
Correct |
955 ms |
269176 KB |
Output is correct |
71 |
Correct |
933 ms |
269048 KB |
Output is correct |
72 |
Correct |
2484 ms |
538872 KB |
Output is correct |
73 |
Correct |
1427 ms |
225228 KB |
Output is correct |
74 |
Correct |
1550 ms |
291688 KB |
Output is correct |
75 |
Correct |
2555 ms |
385108 KB |
Output is correct |
76 |
Correct |
1494 ms |
225616 KB |
Output is correct |
77 |
Correct |
1991 ms |
342724 KB |
Output is correct |
78 |
Correct |
2677 ms |
385388 KB |
Output is correct |
79 |
Correct |
1426 ms |
224980 KB |
Output is correct |
80 |
Correct |
2608 ms |
385380 KB |
Output is correct |
81 |
Correct |
2529 ms |
377808 KB |
Output is correct |
82 |
Correct |
1560 ms |
432324 KB |
Output is correct |
83 |
Correct |
2548 ms |
538872 KB |
Output is correct |
84 |
Correct |
2546 ms |
539000 KB |
Output is correct |
85 |
Correct |
2499 ms |
539000 KB |
Output is correct |
86 |
Correct |
4 ms |
384 KB |
Output is correct |
87 |
Correct |
4 ms |
384 KB |
Output is correct |
88 |
Correct |
5 ms |
1280 KB |
Output is correct |
89 |
Correct |
5 ms |
1280 KB |
Output is correct |
90 |
Correct |
5 ms |
640 KB |
Output is correct |