#include "rect.h"
#include<unordered_set>
#include<vector>
#include<algorithm>
#include<utility>
#define MAXN 2505
using namespace std;
int N,M,A[MAXN][MAXN];
struct pair_hash {
inline std::size_t operator()(const std::pair<int,int> & v) const {
return(v.first*2569 + v.second);
}
};
vector<pair<int,int> > Hor[MAXN][MAXN], Vert[MAXN][MAXN];
unordered_set <pair<int,int> ,pair_hash> HorM[MAXN], VertM[MAXN]; //unordered?
vector<pair<int,int> > S;
class fenwick {
int ft[MAXN + 5];
public:
void add(int v, int p) {
for (int i=p; i<=MAXN; i+=i&(-i)) {ft[i]+=v;}
}
int ask(int p) {
int res = 0;
for (int i=p; i>0; i-=i&(-i)) {res+=ft[i];}
return(res);
}
} BIT;
void pairs() {
for (int i=1; i<=N; i++) { //init horizontal
while (S.size()) {S.pop_back();}
for (int j=1; j<=M; j++) {
bool same = false;
while(S.size() && S.back().first <= A[i][j]) {
if (A[i][j] == S.back().first) {same=true;}
if (j - S.back().second > 1) {HorM[i].insert({S.back().second, j});}
S.pop_back();
}
if (!same && S.size() && j - S.back().second > 1) {HorM[i].insert({S.back().second, j});}
S.push_back({A[i][j], j});
}
}
for (int j=1; j<=M; j++) {
while (S.size()) {S.pop_back();}
for (int i=1; i<=N; i++) {
bool same = false;
while (S.size() && S.back().first <= A[i][j]) {
if (A[i][j] == S.back().first) {same=true;}
if (i - S.back().second > 1) {VertM[j].insert({S.back().second,i});}
S.pop_back();
}
if (!same && S.size() && i - S.back().second > 1) {VertM[j].insert({S.back().second,i});}
S.push_back({A[i][j], i});
}
}
for (int i=N; i>=1; i--) {
while (HorM[i].size()) {
int pt = i;
pair <int,int> p = *HorM[i].begin();
while (HorM[pt].find(p) != HorM[pt].end()) {
Hor[pt][p.first].push_back({p.second, i}); //i is goes up to
HorM[pt].erase(p), pt--;
}
}
}
for (int j=M; j>=1; j--) {
while (VertM[j].size()) {
int pt = j;
pair <int,int> p = *VertM[j].begin();
while (VertM[pt].find(p) != VertM[pt].end()) {
Vert[p.first][pt].push_back({j, p.second});
VertM[pt].erase(p), pt--;
}
}
}
for (int i=1; i<=N; i++) {
for (int j=1; j<=M; j++) {
sort(Hor[i][j].begin(), Hor[i][j].end());
sort(Vert[i][j].begin(), Vert[i][j].end());
}
}
}
long long count_rectangles(vector<vector<int> > a) {
long long ans = 0;
N = a.size(), M = a[0].size();
for (int i=0; i<N; i++) {
for (int j=0; j<M; j++) {
A[i+1][j+1]=a[i][j]; //zero index
}
}
pairs();
for (int i=1; i<=N; i++) {
for (int j=1; j<=M; j++) {
//(i,j) top left
int pt1 = Hor[i+1][j].size()-1, pt2 = Vert[i][j+1].size()-1; //go (i,j+1) for vert and (i+1,j) for hor
while (pt1 >= 0 || pt2 >= 0) {
if (pt1 == -1 || (pt2 >= 0 && Hor[i+1][j][pt1].first <= Vert[i][j+1][pt2].first+1)) {
BIT.add(1, Vert[i][j+1][pt2].second);
pt2--;
} else {
ans += (long long) BIT.ask(Hor[i+1][j][pt1].second+1) - BIT.ask(i+1);
pt1--;
}
}
for (auto v: Vert[i][j+1]) {
BIT.add(-1, v.second);
}
}
}
return(ans);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
174 ms |
295416 KB |
Output is correct |
2 |
Correct |
172 ms |
295544 KB |
Output is correct |
3 |
Correct |
171 ms |
295544 KB |
Output is correct |
4 |
Correct |
168 ms |
295544 KB |
Output is correct |
5 |
Correct |
166 ms |
295416 KB |
Output is correct |
6 |
Correct |
178 ms |
295544 KB |
Output is correct |
7 |
Correct |
174 ms |
295416 KB |
Output is correct |
8 |
Correct |
166 ms |
295416 KB |
Output is correct |
9 |
Correct |
172 ms |
295544 KB |
Output is correct |
10 |
Correct |
173 ms |
295544 KB |
Output is correct |
11 |
Correct |
172 ms |
295544 KB |
Output is correct |
12 |
Correct |
165 ms |
295548 KB |
Output is correct |
13 |
Correct |
166 ms |
295288 KB |
Output is correct |
14 |
Correct |
164 ms |
295288 KB |
Output is correct |
15 |
Correct |
173 ms |
295416 KB |
Output is correct |
16 |
Correct |
163 ms |
295288 KB |
Output is correct |
17 |
Correct |
167 ms |
295288 KB |
Output is correct |
18 |
Correct |
174 ms |
295428 KB |
Output is correct |
19 |
Correct |
167 ms |
295544 KB |
Output is correct |
20 |
Correct |
179 ms |
295436 KB |
Output is correct |
21 |
Correct |
165 ms |
295416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
174 ms |
295416 KB |
Output is correct |
2 |
Correct |
172 ms |
295544 KB |
Output is correct |
3 |
Correct |
171 ms |
295544 KB |
Output is correct |
4 |
Correct |
168 ms |
295544 KB |
Output is correct |
5 |
Correct |
166 ms |
295416 KB |
Output is correct |
6 |
Correct |
178 ms |
295544 KB |
Output is correct |
7 |
Correct |
174 ms |
295416 KB |
Output is correct |
8 |
Correct |
166 ms |
295416 KB |
Output is correct |
9 |
Correct |
172 ms |
295544 KB |
Output is correct |
10 |
Correct |
173 ms |
295544 KB |
Output is correct |
11 |
Correct |
172 ms |
295544 KB |
Output is correct |
12 |
Correct |
165 ms |
295548 KB |
Output is correct |
13 |
Correct |
166 ms |
295288 KB |
Output is correct |
14 |
Correct |
164 ms |
295288 KB |
Output is correct |
15 |
Correct |
173 ms |
295416 KB |
Output is correct |
16 |
Correct |
163 ms |
295288 KB |
Output is correct |
17 |
Correct |
168 ms |
296188 KB |
Output is correct |
18 |
Correct |
170 ms |
296312 KB |
Output is correct |
19 |
Correct |
166 ms |
296184 KB |
Output is correct |
20 |
Correct |
182 ms |
296056 KB |
Output is correct |
21 |
Correct |
171 ms |
296316 KB |
Output is correct |
22 |
Correct |
168 ms |
296184 KB |
Output is correct |
23 |
Correct |
172 ms |
296168 KB |
Output is correct |
24 |
Correct |
166 ms |
295928 KB |
Output is correct |
25 |
Correct |
167 ms |
295288 KB |
Output is correct |
26 |
Correct |
174 ms |
295428 KB |
Output is correct |
27 |
Correct |
167 ms |
295544 KB |
Output is correct |
28 |
Correct |
179 ms |
295436 KB |
Output is correct |
29 |
Correct |
165 ms |
295416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
174 ms |
295416 KB |
Output is correct |
2 |
Correct |
172 ms |
295544 KB |
Output is correct |
3 |
Correct |
171 ms |
295544 KB |
Output is correct |
4 |
Correct |
168 ms |
295544 KB |
Output is correct |
5 |
Correct |
166 ms |
295416 KB |
Output is correct |
6 |
Correct |
178 ms |
295544 KB |
Output is correct |
7 |
Correct |
174 ms |
295416 KB |
Output is correct |
8 |
Correct |
166 ms |
295416 KB |
Output is correct |
9 |
Correct |
172 ms |
295544 KB |
Output is correct |
10 |
Correct |
173 ms |
295544 KB |
Output is correct |
11 |
Correct |
172 ms |
295544 KB |
Output is correct |
12 |
Correct |
165 ms |
295548 KB |
Output is correct |
13 |
Correct |
166 ms |
295288 KB |
Output is correct |
14 |
Correct |
164 ms |
295288 KB |
Output is correct |
15 |
Correct |
173 ms |
295416 KB |
Output is correct |
16 |
Correct |
163 ms |
295288 KB |
Output is correct |
17 |
Correct |
168 ms |
296188 KB |
Output is correct |
18 |
Correct |
170 ms |
296312 KB |
Output is correct |
19 |
Correct |
166 ms |
296184 KB |
Output is correct |
20 |
Correct |
182 ms |
296056 KB |
Output is correct |
21 |
Correct |
171 ms |
296316 KB |
Output is correct |
22 |
Correct |
168 ms |
296184 KB |
Output is correct |
23 |
Correct |
172 ms |
296168 KB |
Output is correct |
24 |
Correct |
166 ms |
295928 KB |
Output is correct |
25 |
Correct |
185 ms |
300408 KB |
Output is correct |
26 |
Correct |
194 ms |
300408 KB |
Output is correct |
27 |
Correct |
193 ms |
300536 KB |
Output is correct |
28 |
Correct |
181 ms |
297976 KB |
Output is correct |
29 |
Correct |
199 ms |
300152 KB |
Output is correct |
30 |
Correct |
201 ms |
300536 KB |
Output is correct |
31 |
Correct |
199 ms |
300164 KB |
Output is correct |
32 |
Correct |
193 ms |
300024 KB |
Output is correct |
33 |
Correct |
167 ms |
295288 KB |
Output is correct |
34 |
Correct |
174 ms |
295428 KB |
Output is correct |
35 |
Correct |
167 ms |
295544 KB |
Output is correct |
36 |
Correct |
179 ms |
295436 KB |
Output is correct |
37 |
Correct |
165 ms |
295416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
174 ms |
295416 KB |
Output is correct |
2 |
Correct |
172 ms |
295544 KB |
Output is correct |
3 |
Correct |
171 ms |
295544 KB |
Output is correct |
4 |
Correct |
168 ms |
295544 KB |
Output is correct |
5 |
Correct |
166 ms |
295416 KB |
Output is correct |
6 |
Correct |
178 ms |
295544 KB |
Output is correct |
7 |
Correct |
174 ms |
295416 KB |
Output is correct |
8 |
Correct |
166 ms |
295416 KB |
Output is correct |
9 |
Correct |
172 ms |
295544 KB |
Output is correct |
10 |
Correct |
173 ms |
295544 KB |
Output is correct |
11 |
Correct |
172 ms |
295544 KB |
Output is correct |
12 |
Correct |
165 ms |
295548 KB |
Output is correct |
13 |
Correct |
166 ms |
295288 KB |
Output is correct |
14 |
Correct |
164 ms |
295288 KB |
Output is correct |
15 |
Correct |
173 ms |
295416 KB |
Output is correct |
16 |
Correct |
163 ms |
295288 KB |
Output is correct |
17 |
Correct |
168 ms |
296188 KB |
Output is correct |
18 |
Correct |
170 ms |
296312 KB |
Output is correct |
19 |
Correct |
166 ms |
296184 KB |
Output is correct |
20 |
Correct |
182 ms |
296056 KB |
Output is correct |
21 |
Correct |
171 ms |
296316 KB |
Output is correct |
22 |
Correct |
168 ms |
296184 KB |
Output is correct |
23 |
Correct |
172 ms |
296168 KB |
Output is correct |
24 |
Correct |
166 ms |
295928 KB |
Output is correct |
25 |
Correct |
185 ms |
300408 KB |
Output is correct |
26 |
Correct |
194 ms |
300408 KB |
Output is correct |
27 |
Correct |
193 ms |
300536 KB |
Output is correct |
28 |
Correct |
181 ms |
297976 KB |
Output is correct |
29 |
Correct |
199 ms |
300152 KB |
Output is correct |
30 |
Correct |
201 ms |
300536 KB |
Output is correct |
31 |
Correct |
199 ms |
300164 KB |
Output is correct |
32 |
Correct |
193 ms |
300024 KB |
Output is correct |
33 |
Correct |
312 ms |
327800 KB |
Output is correct |
34 |
Correct |
314 ms |
327672 KB |
Output is correct |
35 |
Correct |
303 ms |
327672 KB |
Output is correct |
36 |
Correct |
289 ms |
327672 KB |
Output is correct |
37 |
Correct |
471 ms |
345720 KB |
Output is correct |
38 |
Correct |
463 ms |
345720 KB |
Output is correct |
39 |
Correct |
470 ms |
346104 KB |
Output is correct |
40 |
Correct |
450 ms |
343032 KB |
Output is correct |
41 |
Correct |
320 ms |
316152 KB |
Output is correct |
42 |
Correct |
341 ms |
320504 KB |
Output is correct |
43 |
Correct |
574 ms |
343468 KB |
Output is correct |
44 |
Correct |
595 ms |
345720 KB |
Output is correct |
45 |
Correct |
366 ms |
323192 KB |
Output is correct |
46 |
Correct |
367 ms |
321656 KB |
Output is correct |
47 |
Correct |
546 ms |
342136 KB |
Output is correct |
48 |
Correct |
567 ms |
343220 KB |
Output is correct |
49 |
Correct |
167 ms |
295288 KB |
Output is correct |
50 |
Correct |
174 ms |
295428 KB |
Output is correct |
51 |
Correct |
167 ms |
295544 KB |
Output is correct |
52 |
Correct |
179 ms |
295436 KB |
Output is correct |
53 |
Correct |
165 ms |
295416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
170 ms |
295928 KB |
Output is correct |
2 |
Correct |
167 ms |
295928 KB |
Output is correct |
3 |
Correct |
176 ms |
295544 KB |
Output is correct |
4 |
Correct |
167 ms |
295288 KB |
Output is correct |
5 |
Correct |
170 ms |
295800 KB |
Output is correct |
6 |
Correct |
177 ms |
296160 KB |
Output is correct |
7 |
Correct |
169 ms |
295800 KB |
Output is correct |
8 |
Correct |
170 ms |
295768 KB |
Output is correct |
9 |
Correct |
172 ms |
295800 KB |
Output is correct |
10 |
Correct |
167 ms |
295416 KB |
Output is correct |
11 |
Correct |
170 ms |
295672 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
168 ms |
295416 KB |
Output is correct |
2 |
Correct |
935 ms |
392896 KB |
Output is correct |
3 |
Correct |
1848 ms |
496760 KB |
Output is correct |
4 |
Correct |
1901 ms |
497752 KB |
Output is correct |
5 |
Correct |
1836 ms |
497384 KB |
Output is correct |
6 |
Correct |
322 ms |
336120 KB |
Output is correct |
7 |
Correct |
443 ms |
368668 KB |
Output is correct |
8 |
Correct |
470 ms |
371744 KB |
Output is correct |
9 |
Correct |
167 ms |
295288 KB |
Output is correct |
10 |
Correct |
174 ms |
295428 KB |
Output is correct |
11 |
Correct |
167 ms |
295544 KB |
Output is correct |
12 |
Correct |
179 ms |
295436 KB |
Output is correct |
13 |
Correct |
165 ms |
295416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
174 ms |
295416 KB |
Output is correct |
2 |
Correct |
172 ms |
295544 KB |
Output is correct |
3 |
Correct |
171 ms |
295544 KB |
Output is correct |
4 |
Correct |
168 ms |
295544 KB |
Output is correct |
5 |
Correct |
166 ms |
295416 KB |
Output is correct |
6 |
Correct |
178 ms |
295544 KB |
Output is correct |
7 |
Correct |
174 ms |
295416 KB |
Output is correct |
8 |
Correct |
166 ms |
295416 KB |
Output is correct |
9 |
Correct |
172 ms |
295544 KB |
Output is correct |
10 |
Correct |
173 ms |
295544 KB |
Output is correct |
11 |
Correct |
172 ms |
295544 KB |
Output is correct |
12 |
Correct |
165 ms |
295548 KB |
Output is correct |
13 |
Correct |
166 ms |
295288 KB |
Output is correct |
14 |
Correct |
164 ms |
295288 KB |
Output is correct |
15 |
Correct |
173 ms |
295416 KB |
Output is correct |
16 |
Correct |
163 ms |
295288 KB |
Output is correct |
17 |
Correct |
168 ms |
296188 KB |
Output is correct |
18 |
Correct |
170 ms |
296312 KB |
Output is correct |
19 |
Correct |
166 ms |
296184 KB |
Output is correct |
20 |
Correct |
182 ms |
296056 KB |
Output is correct |
21 |
Correct |
171 ms |
296316 KB |
Output is correct |
22 |
Correct |
168 ms |
296184 KB |
Output is correct |
23 |
Correct |
172 ms |
296168 KB |
Output is correct |
24 |
Correct |
166 ms |
295928 KB |
Output is correct |
25 |
Correct |
185 ms |
300408 KB |
Output is correct |
26 |
Correct |
194 ms |
300408 KB |
Output is correct |
27 |
Correct |
193 ms |
300536 KB |
Output is correct |
28 |
Correct |
181 ms |
297976 KB |
Output is correct |
29 |
Correct |
199 ms |
300152 KB |
Output is correct |
30 |
Correct |
201 ms |
300536 KB |
Output is correct |
31 |
Correct |
199 ms |
300164 KB |
Output is correct |
32 |
Correct |
193 ms |
300024 KB |
Output is correct |
33 |
Correct |
312 ms |
327800 KB |
Output is correct |
34 |
Correct |
314 ms |
327672 KB |
Output is correct |
35 |
Correct |
303 ms |
327672 KB |
Output is correct |
36 |
Correct |
289 ms |
327672 KB |
Output is correct |
37 |
Correct |
471 ms |
345720 KB |
Output is correct |
38 |
Correct |
463 ms |
345720 KB |
Output is correct |
39 |
Correct |
470 ms |
346104 KB |
Output is correct |
40 |
Correct |
450 ms |
343032 KB |
Output is correct |
41 |
Correct |
320 ms |
316152 KB |
Output is correct |
42 |
Correct |
341 ms |
320504 KB |
Output is correct |
43 |
Correct |
574 ms |
343468 KB |
Output is correct |
44 |
Correct |
595 ms |
345720 KB |
Output is correct |
45 |
Correct |
366 ms |
323192 KB |
Output is correct |
46 |
Correct |
367 ms |
321656 KB |
Output is correct |
47 |
Correct |
546 ms |
342136 KB |
Output is correct |
48 |
Correct |
567 ms |
343220 KB |
Output is correct |
49 |
Correct |
170 ms |
295928 KB |
Output is correct |
50 |
Correct |
167 ms |
295928 KB |
Output is correct |
51 |
Correct |
176 ms |
295544 KB |
Output is correct |
52 |
Correct |
167 ms |
295288 KB |
Output is correct |
53 |
Correct |
170 ms |
295800 KB |
Output is correct |
54 |
Correct |
177 ms |
296160 KB |
Output is correct |
55 |
Correct |
169 ms |
295800 KB |
Output is correct |
56 |
Correct |
170 ms |
295768 KB |
Output is correct |
57 |
Correct |
172 ms |
295800 KB |
Output is correct |
58 |
Correct |
167 ms |
295416 KB |
Output is correct |
59 |
Correct |
170 ms |
295672 KB |
Output is correct |
60 |
Correct |
168 ms |
295416 KB |
Output is correct |
61 |
Correct |
935 ms |
392896 KB |
Output is correct |
62 |
Correct |
1848 ms |
496760 KB |
Output is correct |
63 |
Correct |
1901 ms |
497752 KB |
Output is correct |
64 |
Correct |
1836 ms |
497384 KB |
Output is correct |
65 |
Correct |
322 ms |
336120 KB |
Output is correct |
66 |
Correct |
443 ms |
368668 KB |
Output is correct |
67 |
Correct |
470 ms |
371744 KB |
Output is correct |
68 |
Correct |
2176 ms |
642524 KB |
Output is correct |
69 |
Correct |
2310 ms |
642276 KB |
Output is correct |
70 |
Correct |
1814 ms |
642168 KB |
Output is correct |
71 |
Correct |
1762 ms |
642040 KB |
Output is correct |
72 |
Correct |
4793 ms |
886524 KB |
Output is correct |
73 |
Correct |
3604 ms |
650232 KB |
Output is correct |
74 |
Correct |
4002 ms |
721096 KB |
Output is correct |
75 |
Execution timed out |
5129 ms |
901276 KB |
Time limit exceeded |
76 |
Halted |
0 ms |
0 KB |
- |