#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];
set<tuple<int, int, int, int>> 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, x2, y1, 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 |
1280 KB |
Output is correct |
8 |
Correct |
6 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 |
5 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 |
5 ms |
512 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
4 ms |
384 KB |
Output is correct |
19 |
Correct |
6 ms |
1304 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 |
1280 KB |
Output is correct |
8 |
Correct |
6 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 |
5 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 |
5 ms |
512 KB |
Output is correct |
17 |
Correct |
8 ms |
3584 KB |
Output is correct |
18 |
Correct |
8 ms |
3584 KB |
Output is correct |
19 |
Correct |
8 ms |
3584 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
9 ms |
3328 KB |
Output is correct |
23 |
Correct |
7 ms |
3328 KB |
Output is correct |
24 |
Correct |
7 ms |
3072 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
4 ms |
384 KB |
Output is correct |
27 |
Correct |
6 ms |
1304 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 |
1280 KB |
Output is correct |
8 |
Correct |
6 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 |
5 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 |
5 ms |
512 KB |
Output is correct |
17 |
Correct |
8 ms |
3584 KB |
Output is correct |
18 |
Correct |
8 ms |
3584 KB |
Output is correct |
19 |
Correct |
8 ms |
3584 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
9 ms |
3328 KB |
Output is correct |
23 |
Correct |
7 ms |
3328 KB |
Output is correct |
24 |
Correct |
7 ms |
3072 KB |
Output is correct |
25 |
Correct |
23 ms |
11008 KB |
Output is correct |
26 |
Correct |
23 ms |
11000 KB |
Output is correct |
27 |
Correct |
24 ms |
11136 KB |
Output is correct |
28 |
Correct |
15 ms |
8576 KB |
Output is correct |
29 |
Correct |
18 ms |
9216 KB |
Output is correct |
30 |
Correct |
18 ms |
9472 KB |
Output is correct |
31 |
Correct |
18 ms |
9344 KB |
Output is correct |
32 |
Correct |
19 ms |
9344 KB |
Output is correct |
33 |
Correct |
5 ms |
384 KB |
Output is correct |
34 |
Correct |
4 ms |
384 KB |
Output is correct |
35 |
Correct |
6 ms |
1304 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 |
1280 KB |
Output is correct |
8 |
Correct |
6 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 |
5 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 |
5 ms |
512 KB |
Output is correct |
17 |
Correct |
8 ms |
3584 KB |
Output is correct |
18 |
Correct |
8 ms |
3584 KB |
Output is correct |
19 |
Correct |
8 ms |
3584 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
9 ms |
3328 KB |
Output is correct |
23 |
Correct |
7 ms |
3328 KB |
Output is correct |
24 |
Correct |
7 ms |
3072 KB |
Output is correct |
25 |
Correct |
23 ms |
11008 KB |
Output is correct |
26 |
Correct |
23 ms |
11000 KB |
Output is correct |
27 |
Correct |
24 ms |
11136 KB |
Output is correct |
28 |
Correct |
15 ms |
8576 KB |
Output is correct |
29 |
Correct |
18 ms |
9216 KB |
Output is correct |
30 |
Correct |
18 ms |
9472 KB |
Output is correct |
31 |
Correct |
18 ms |
9344 KB |
Output is correct |
32 |
Correct |
19 ms |
9344 KB |
Output is correct |
33 |
Correct |
91 ms |
43256 KB |
Output is correct |
34 |
Correct |
84 ms |
43256 KB |
Output is correct |
35 |
Correct |
89 ms |
43256 KB |
Output is correct |
36 |
Correct |
82 ms |
43204 KB |
Output is correct |
37 |
Correct |
269 ms |
75680 KB |
Output is correct |
38 |
Correct |
284 ms |
75768 KB |
Output is correct |
39 |
Correct |
259 ms |
76024 KB |
Output is correct |
40 |
Correct |
249 ms |
71160 KB |
Output is correct |
41 |
Correct |
108 ms |
44160 KB |
Output is correct |
42 |
Correct |
124 ms |
45944 KB |
Output is correct |
43 |
Correct |
164 ms |
54136 KB |
Output is correct |
44 |
Correct |
173 ms |
56056 KB |
Output is correct |
45 |
Correct |
99 ms |
39672 KB |
Output is correct |
46 |
Correct |
87 ms |
28280 KB |
Output is correct |
47 |
Correct |
165 ms |
55032 KB |
Output is correct |
48 |
Correct |
175 ms |
56164 KB |
Output is correct |
49 |
Correct |
5 ms |
384 KB |
Output is correct |
50 |
Correct |
4 ms |
384 KB |
Output is correct |
51 |
Correct |
6 ms |
1304 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 |
6 ms |
896 KB |
Output is correct |
2 |
Correct |
6 ms |
896 KB |
Output is correct |
3 |
Correct |
5 ms |
768 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
6 ms |
768 KB |
Output is correct |
6 |
Correct |
6 ms |
768 KB |
Output is correct |
7 |
Correct |
6 ms |
768 KB |
Output is correct |
8 |
Correct |
6 ms |
768 KB |
Output is correct |
9 |
Correct |
6 ms |
768 KB |
Output is correct |
10 |
Correct |
5 ms |
512 KB |
Output is correct |
11 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
640 KB |
Output is correct |
2 |
Correct |
586 ms |
151672 KB |
Output is correct |
3 |
Correct |
1309 ms |
310904 KB |
Output is correct |
4 |
Correct |
1312 ms |
312312 KB |
Output is correct |
5 |
Correct |
1334 ms |
312316 KB |
Output is correct |
6 |
Correct |
441 ms |
146552 KB |
Output is correct |
7 |
Correct |
870 ms |
292856 KB |
Output is correct |
8 |
Correct |
926 ms |
296568 KB |
Output is correct |
9 |
Correct |
5 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
6 ms |
1304 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 |
1280 KB |
Output is correct |
8 |
Correct |
6 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 |
5 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 |
5 ms |
512 KB |
Output is correct |
17 |
Correct |
8 ms |
3584 KB |
Output is correct |
18 |
Correct |
8 ms |
3584 KB |
Output is correct |
19 |
Correct |
8 ms |
3584 KB |
Output is correct |
20 |
Correct |
7 ms |
3200 KB |
Output is correct |
21 |
Correct |
7 ms |
3200 KB |
Output is correct |
22 |
Correct |
9 ms |
3328 KB |
Output is correct |
23 |
Correct |
7 ms |
3328 KB |
Output is correct |
24 |
Correct |
7 ms |
3072 KB |
Output is correct |
25 |
Correct |
23 ms |
11008 KB |
Output is correct |
26 |
Correct |
23 ms |
11000 KB |
Output is correct |
27 |
Correct |
24 ms |
11136 KB |
Output is correct |
28 |
Correct |
15 ms |
8576 KB |
Output is correct |
29 |
Correct |
18 ms |
9216 KB |
Output is correct |
30 |
Correct |
18 ms |
9472 KB |
Output is correct |
31 |
Correct |
18 ms |
9344 KB |
Output is correct |
32 |
Correct |
19 ms |
9344 KB |
Output is correct |
33 |
Correct |
91 ms |
43256 KB |
Output is correct |
34 |
Correct |
84 ms |
43256 KB |
Output is correct |
35 |
Correct |
89 ms |
43256 KB |
Output is correct |
36 |
Correct |
82 ms |
43204 KB |
Output is correct |
37 |
Correct |
269 ms |
75680 KB |
Output is correct |
38 |
Correct |
284 ms |
75768 KB |
Output is correct |
39 |
Correct |
259 ms |
76024 KB |
Output is correct |
40 |
Correct |
249 ms |
71160 KB |
Output is correct |
41 |
Correct |
108 ms |
44160 KB |
Output is correct |
42 |
Correct |
124 ms |
45944 KB |
Output is correct |
43 |
Correct |
164 ms |
54136 KB |
Output is correct |
44 |
Correct |
173 ms |
56056 KB |
Output is correct |
45 |
Correct |
99 ms |
39672 KB |
Output is correct |
46 |
Correct |
87 ms |
28280 KB |
Output is correct |
47 |
Correct |
165 ms |
55032 KB |
Output is correct |
48 |
Correct |
175 ms |
56164 KB |
Output is correct |
49 |
Correct |
6 ms |
896 KB |
Output is correct |
50 |
Correct |
6 ms |
896 KB |
Output is correct |
51 |
Correct |
5 ms |
768 KB |
Output is correct |
52 |
Correct |
5 ms |
384 KB |
Output is correct |
53 |
Correct |
6 ms |
768 KB |
Output is correct |
54 |
Correct |
6 ms |
768 KB |
Output is correct |
55 |
Correct |
6 ms |
768 KB |
Output is correct |
56 |
Correct |
6 ms |
768 KB |
Output is correct |
57 |
Correct |
6 ms |
768 KB |
Output is correct |
58 |
Correct |
5 ms |
512 KB |
Output is correct |
59 |
Correct |
5 ms |
640 KB |
Output is correct |
60 |
Correct |
5 ms |
640 KB |
Output is correct |
61 |
Correct |
586 ms |
151672 KB |
Output is correct |
62 |
Correct |
1309 ms |
310904 KB |
Output is correct |
63 |
Correct |
1312 ms |
312312 KB |
Output is correct |
64 |
Correct |
1334 ms |
312316 KB |
Output is correct |
65 |
Correct |
441 ms |
146552 KB |
Output is correct |
66 |
Correct |
870 ms |
292856 KB |
Output is correct |
67 |
Correct |
926 ms |
296568 KB |
Output is correct |
68 |
Correct |
1092 ms |
315940 KB |
Output is correct |
69 |
Correct |
968 ms |
316016 KB |
Output is correct |
70 |
Correct |
968 ms |
315888 KB |
Output is correct |
71 |
Correct |
934 ms |
315884 KB |
Output is correct |
72 |
Correct |
4194 ms |
723088 KB |
Output is correct |
73 |
Correct |
1291 ms |
264312 KB |
Output is correct |
74 |
Correct |
1394 ms |
341756 KB |
Output is correct |
75 |
Correct |
2140 ms |
440164 KB |
Output is correct |
76 |
Correct |
1342 ms |
280160 KB |
Output is correct |
77 |
Correct |
1774 ms |
420472 KB |
Output is correct |
78 |
Correct |
2205 ms |
466680 KB |
Output is correct |
79 |
Correct |
1286 ms |
272040 KB |
Output is correct |
80 |
Correct |
2193 ms |
465784 KB |
Output is correct |
81 |
Correct |
2091 ms |
453060 KB |
Output is correct |
82 |
Correct |
2335 ms |
490604 KB |
Output is correct |
83 |
Correct |
4121 ms |
722460 KB |
Output is correct |
84 |
Correct |
4190 ms |
722856 KB |
Output is correct |
85 |
Correct |
4150 ms |
723160 KB |
Output is correct |
86 |
Correct |
5 ms |
384 KB |
Output is correct |
87 |
Correct |
4 ms |
384 KB |
Output is correct |
88 |
Correct |
6 ms |
1304 KB |
Output is correct |
89 |
Correct |
5 ms |
1280 KB |
Output is correct |
90 |
Correct |
5 ms |
640 KB |
Output is correct |