#include <bits/stdc++.h>
#include "rect.h"
#define eb emplace_back
using namespace std;
using tii=tuple<int, int, int>;
int N, M;
vector<tii> H, V;
long long count_rectangles(vector<vector<int>> a) {
N=a.size(); M=a[0].size();
vector<vector<int>> l, r, u, d;
for (int i=0; i<N; i++)
l.eb(vector<int>(M, -1));
r=u=d=l;
for (int i=0; i<N; i++) {
vector<int> st;
for (int j=0; j<M; j++) {
while (st.size()&&a[i][st.back()]<a[i][j]) st.pop_back();
if (st.size()) H.eb(st.back(), j, i);
st.eb(j);
}
st.clear();
for (int j=M-1; j>=0; j--) {
while (st.size()&&a[i][st.back()]<a[i][j]) st.pop_back();
if (st.size()) H.eb(j, st.back(), i);
st.eb(j);
}
st.clear();
for (int j=0; j<M; j++) {
while (st.size()&&a[i][st.back()]<=a[i][j]) st.pop_back();
if (st.size()) l[i][j]=st.back();
st.eb(j);
}
st.clear();
for (int j=M-1; j>=0; j--) {
while (st.size()&&a[i][st.back()]<=a[i][j]) st.pop_back();
if (st.size()) r[i][j]=st.back();
st.eb(j);
}
}
for (int j=0; j<M; j++) {
vector<int> st;
for (int i=0; i<N; i++) {
while (st.size()&&a[st.back()][j]<a[i][j]) st.pop_back();
if (st.size()) V.eb(st.back(), i, j);
st.eb(i);
}
st.clear();
for (int i=N-1; i>=0; i--) {
while (st.size()&&a[st.back()][j]<a[i][j]) st.pop_back();
if (st.size()) V.eb(i, st.back(), j);
st.eb(i);
}
st.clear();
for (int i=0; i<N; i++) {
while (st.size()&&a[st.back()][j]<=a[i][j]) st.pop_back();
if (st.size()) u[i][j]=st.back();
st.eb(i);
}
st.clear();
for (int i=N-1; i>=0; i--) {
while (st.size()&&a[st.back()][j]<=a[i][j]) st.pop_back();
if (st.size()) d[i][j]=st.back();
st.eb(i);
}
}
sort(H.begin(), H.end());
H.resize(unique(H.begin(), H.end())-H.begin());
sort(V.begin(), V.end());
V.resize(unique(V.begin(), V.end())-V.begin());
vector<tuple<int, int, int, int>> A;
for (int i=1; i<N-1; i++) for (int j=1; j<M-1; j++) {
int L=l[i][j], R=r[i][j], U=u[i][j], D=d[i][j];
if (L==-1||R==-1||U==-1||D==-1) continue;
int b1=lower_bound(H.begin(), H.end(), tii(L, R, U+1))-H.begin();
if (b1>=H.size()||tii(L, R, U+1)!=H[b1]) continue;
b1+=D-U-2;
if (b1>=H.size()||tii(L, R, D-1)!=H[b1]) continue;
b1=lower_bound(V.begin(), V.end(), tii(U, D, L+1))-V.begin();
if (b1>=V.size()||tii(U, D, L+1)!=V[b1]) continue;
b1+=R-L-2;
if (b1>=V.size()||tii(U, D, R-1)!=V[b1]) continue;
A.eb(L, R, U, D);
}
sort(A.begin(), A.end());
return unique(A.begin(), A.end())-A.begin();
}
Compilation message
rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:83:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
83 | if (b1>=H.size()||tii(L, R, U+1)!=H[b1]) continue;
| ~~^~~~~~~~~~
rect.cpp:85:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
85 | if (b1>=H.size()||tii(L, R, D-1)!=H[b1]) continue;
| ~~^~~~~~~~~~
rect.cpp:88:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
88 | if (b1>=V.size()||tii(U, D, L+1)!=V[b1]) continue;
| ~~^~~~~~~~~~
rect.cpp:90:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
90 | if (b1>=V.size()||tii(U, D, R-1)!=V[b1]) continue;
| ~~^~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
1 ms |
256 KB |
Output is correct |
18 |
Correct |
0 ms |
256 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
7 ms |
1024 KB |
Output is correct |
18 |
Correct |
7 ms |
1024 KB |
Output is correct |
19 |
Correct |
6 ms |
1024 KB |
Output is correct |
20 |
Correct |
6 ms |
960 KB |
Output is correct |
21 |
Correct |
6 ms |
960 KB |
Output is correct |
22 |
Correct |
6 ms |
960 KB |
Output is correct |
23 |
Correct |
6 ms |
960 KB |
Output is correct |
24 |
Correct |
3 ms |
640 KB |
Output is correct |
25 |
Correct |
1 ms |
256 KB |
Output is correct |
26 |
Correct |
0 ms |
256 KB |
Output is correct |
27 |
Correct |
1 ms |
384 KB |
Output is correct |
28 |
Correct |
1 ms |
384 KB |
Output is correct |
29 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
7 ms |
1024 KB |
Output is correct |
18 |
Correct |
7 ms |
1024 KB |
Output is correct |
19 |
Correct |
6 ms |
1024 KB |
Output is correct |
20 |
Correct |
6 ms |
960 KB |
Output is correct |
21 |
Correct |
6 ms |
960 KB |
Output is correct |
22 |
Correct |
6 ms |
960 KB |
Output is correct |
23 |
Correct |
6 ms |
960 KB |
Output is correct |
24 |
Correct |
3 ms |
640 KB |
Output is correct |
25 |
Correct |
41 ms |
5100 KB |
Output is correct |
26 |
Correct |
41 ms |
5092 KB |
Output is correct |
27 |
Correct |
44 ms |
5100 KB |
Output is correct |
28 |
Correct |
35 ms |
4596 KB |
Output is correct |
29 |
Correct |
41 ms |
4724 KB |
Output is correct |
30 |
Correct |
42 ms |
4852 KB |
Output is correct |
31 |
Correct |
41 ms |
4852 KB |
Output is correct |
32 |
Correct |
40 ms |
4852 KB |
Output is correct |
33 |
Correct |
1 ms |
256 KB |
Output is correct |
34 |
Correct |
0 ms |
256 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
37 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
7 ms |
1024 KB |
Output is correct |
18 |
Correct |
7 ms |
1024 KB |
Output is correct |
19 |
Correct |
6 ms |
1024 KB |
Output is correct |
20 |
Correct |
6 ms |
960 KB |
Output is correct |
21 |
Correct |
6 ms |
960 KB |
Output is correct |
22 |
Correct |
6 ms |
960 KB |
Output is correct |
23 |
Correct |
6 ms |
960 KB |
Output is correct |
24 |
Correct |
3 ms |
640 KB |
Output is correct |
25 |
Correct |
41 ms |
5100 KB |
Output is correct |
26 |
Correct |
41 ms |
5092 KB |
Output is correct |
27 |
Correct |
44 ms |
5100 KB |
Output is correct |
28 |
Correct |
35 ms |
4596 KB |
Output is correct |
29 |
Correct |
41 ms |
4724 KB |
Output is correct |
30 |
Correct |
42 ms |
4852 KB |
Output is correct |
31 |
Correct |
41 ms |
4852 KB |
Output is correct |
32 |
Correct |
40 ms |
4852 KB |
Output is correct |
33 |
Correct |
266 ms |
39872 KB |
Output is correct |
34 |
Correct |
255 ms |
39876 KB |
Output is correct |
35 |
Correct |
270 ms |
39988 KB |
Output is correct |
36 |
Correct |
218 ms |
39876 KB |
Output is correct |
37 |
Correct |
599 ms |
51604 KB |
Output is correct |
38 |
Correct |
592 ms |
51592 KB |
Output is correct |
39 |
Correct |
599 ms |
51888 KB |
Output is correct |
40 |
Correct |
546 ms |
49068 KB |
Output is correct |
41 |
Correct |
425 ms |
42824 KB |
Output is correct |
42 |
Correct |
477 ms |
42824 KB |
Output is correct |
43 |
Correct |
608 ms |
42824 KB |
Output is correct |
44 |
Correct |
588 ms |
43208 KB |
Output is correct |
45 |
Correct |
281 ms |
21976 KB |
Output is correct |
46 |
Correct |
304 ms |
21980 KB |
Output is correct |
47 |
Correct |
596 ms |
43572 KB |
Output is correct |
48 |
Correct |
592 ms |
43956 KB |
Output is correct |
49 |
Correct |
1 ms |
256 KB |
Output is correct |
50 |
Correct |
0 ms |
256 KB |
Output is correct |
51 |
Correct |
1 ms |
384 KB |
Output is correct |
52 |
Correct |
1 ms |
384 KB |
Output is correct |
53 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
960 KB |
Output is correct |
2 |
Correct |
4 ms |
820 KB |
Output is correct |
3 |
Correct |
3 ms |
960 KB |
Output is correct |
4 |
Correct |
1 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
896 KB |
Output is correct |
6 |
Correct |
4 ms |
896 KB |
Output is correct |
7 |
Correct |
4 ms |
896 KB |
Output is correct |
8 |
Correct |
4 ms |
840 KB |
Output is correct |
9 |
Correct |
5 ms |
968 KB |
Output is correct |
10 |
Correct |
2 ms |
512 KB |
Output is correct |
11 |
Correct |
3 ms |
768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
2890 ms |
235372 KB |
Output is correct |
3 |
Execution timed out |
5062 ms |
491332 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
7 ms |
1024 KB |
Output is correct |
18 |
Correct |
7 ms |
1024 KB |
Output is correct |
19 |
Correct |
6 ms |
1024 KB |
Output is correct |
20 |
Correct |
6 ms |
960 KB |
Output is correct |
21 |
Correct |
6 ms |
960 KB |
Output is correct |
22 |
Correct |
6 ms |
960 KB |
Output is correct |
23 |
Correct |
6 ms |
960 KB |
Output is correct |
24 |
Correct |
3 ms |
640 KB |
Output is correct |
25 |
Correct |
41 ms |
5100 KB |
Output is correct |
26 |
Correct |
41 ms |
5092 KB |
Output is correct |
27 |
Correct |
44 ms |
5100 KB |
Output is correct |
28 |
Correct |
35 ms |
4596 KB |
Output is correct |
29 |
Correct |
41 ms |
4724 KB |
Output is correct |
30 |
Correct |
42 ms |
4852 KB |
Output is correct |
31 |
Correct |
41 ms |
4852 KB |
Output is correct |
32 |
Correct |
40 ms |
4852 KB |
Output is correct |
33 |
Correct |
266 ms |
39872 KB |
Output is correct |
34 |
Correct |
255 ms |
39876 KB |
Output is correct |
35 |
Correct |
270 ms |
39988 KB |
Output is correct |
36 |
Correct |
218 ms |
39876 KB |
Output is correct |
37 |
Correct |
599 ms |
51604 KB |
Output is correct |
38 |
Correct |
592 ms |
51592 KB |
Output is correct |
39 |
Correct |
599 ms |
51888 KB |
Output is correct |
40 |
Correct |
546 ms |
49068 KB |
Output is correct |
41 |
Correct |
425 ms |
42824 KB |
Output is correct |
42 |
Correct |
477 ms |
42824 KB |
Output is correct |
43 |
Correct |
608 ms |
42824 KB |
Output is correct |
44 |
Correct |
588 ms |
43208 KB |
Output is correct |
45 |
Correct |
281 ms |
21976 KB |
Output is correct |
46 |
Correct |
304 ms |
21980 KB |
Output is correct |
47 |
Correct |
596 ms |
43572 KB |
Output is correct |
48 |
Correct |
592 ms |
43956 KB |
Output is correct |
49 |
Correct |
6 ms |
960 KB |
Output is correct |
50 |
Correct |
4 ms |
820 KB |
Output is correct |
51 |
Correct |
3 ms |
960 KB |
Output is correct |
52 |
Correct |
1 ms |
256 KB |
Output is correct |
53 |
Correct |
5 ms |
896 KB |
Output is correct |
54 |
Correct |
4 ms |
896 KB |
Output is correct |
55 |
Correct |
4 ms |
896 KB |
Output is correct |
56 |
Correct |
4 ms |
840 KB |
Output is correct |
57 |
Correct |
5 ms |
968 KB |
Output is correct |
58 |
Correct |
2 ms |
512 KB |
Output is correct |
59 |
Correct |
3 ms |
768 KB |
Output is correct |
60 |
Correct |
1 ms |
256 KB |
Output is correct |
61 |
Correct |
2890 ms |
235372 KB |
Output is correct |
62 |
Execution timed out |
5062 ms |
491332 KB |
Time limit exceeded |
63 |
Halted |
0 ms |
0 KB |
- |