#include <bits/stdc++.h>
#include "rect.h"
using namespace std;
const int MAX_N = 2505;
const int d[4][2] = {{-1, 0}, {0, -1}, {1, 0}, {0, 1}};
int N, M;
long long ans;
vector <vector <int>> A;
vector <vector <bitset <705>>> validRow, validCol;
vector <vector <vector <bool>>> validRow2, validCol2;
int qs[MAX_N][MAX_N];
short dp[MAX_N];
bool visited[MAX_N][MAX_N];
long long count_rectangles(vector <vector <int>> a) {
N = a.size(), M = a[0].size();
A.resize(N + 1, vector <int> (M + 1, 0));
if(min(N, M) < 3) {
return 0;
}
for(int i = 0; i < N; i++) {
for(int j = 0; j < M; j++) {
A[i + 1][j + 1] = a[i][j];
}
}
if(N <= 700 and M <= 700) {
validRow.resize(N + 1, vector <bitset <705>> (M + 1, bitset <705> (M + 1)));
validCol.resize(M + 1, vector <bitset <705>> (N + 1, bitset <705> (N + 1)));
for(short r = 2; r <= N - 1; r++) {
for(short c1 = 2; c1 <= M - 1; c1++) {
int maxA = 0;
for(short c2 = c1; c2 <= M - 1; c2++) {
maxA = max(maxA, A[r][c2]);
if(min(A[r][c1 - 1], A[r][c2 + 1]) > maxA) {
validRow[r][c1][c2] = 1;
}
else {
validRow[r][c1][c2] = 0;
}
}
}
}
for(short c = 2; c <= M - 1; c++) {
for(short r1 = 2; r1 <= N - 1; r1++) {
int maxA = 0;
for(short r2 = r1; r2 <= N - 1; r2++) {
maxA = max(maxA, A[r2][c]);
if(min(A[r1 - 1][c], A[r2 + 1][c]) > maxA) {
validCol[c][r1][r2] = 1;
}
else {
validCol[c][r1][r2] = 0;
}
}
}
}
for(short r1 = 2; r1 <= N - 1; r1++) {
for(short c1 = 2; c1 <= M - 1; c1++) {
for(short sz = 1; r1 + sz - 1 <= N - 1; sz++) {
dp[sz] = 0;
for(short c2 = c1; c2 <= M - 1; c2++) {
if(validCol[c2][r1][r1 + sz - 1] == true) {
dp[sz]++;
}
else {
break;
}
}
}
for(short sz = 1; c1 + sz - 1 <= M - 1; sz++) {
for(short r2 = r1; r2 <= N - 1; r2++) {
if(validRow[r2][c1][c1 + sz - 1] == true) {
if(dp[r2 - r1 + 1] >= sz) {
ans++;
}
}
else {
break;
}
}
}
}
}
}
else if(N == 3) {
validRow2.resize(N + 1, vector <vector <bool>> (M + 1, vector <bool> (M + 1, false)));
validCol2.resize(M + 1, vector <vector <bool>> (N + 1, vector <bool> (N + 1, false)));
for(int r = 2; r <= N - 1; r++) {
for(int c1 = 2; c1 <= M - 1; c1++) {
int maxA = 0;
for(int c2 = c1; c2 <= M - 1; c2++) {
maxA = max(maxA, A[r][c2]);
if(min(A[r][c1 - 1], A[r][c2 + 1]) > maxA) {
validRow2[r][c1][c2] = true;
}
}
}
}
for(int c = 2; c <= M - 1; c++) {
for(int r1 = 2; r1 <= N - 1; r1++) {
int maxA = 0;
for(int r2 = r1; r2 <= N - 1; r2++) {
maxA = max(maxA, A[r2][c]);
if(min(A[r1 - 1][c], A[r2 + 1][c]) > maxA) {
validCol2[c][r1][r2] = true;
}
}
}
}
for(int r1 = 2; r1 <= N - 1; r1++) {
for(int c1 = 2; c1 <= M - 1; c1++) {
for(int sz = 1; sz <= max(N, M); sz++) {
dp[sz] = 0;
}
for(int sz = 1; r1 + sz - 1 <= N - 1; sz++) {
for(int c2 = c1; c2 <= M - 1; c2++) {
if(validCol2[c2][r1][r1 + sz - 1] == true) {
dp[sz]++;
}
else {
break;
}
}
}
for(int sz = 1; c1 + sz - 1 <= M - 1; sz++) {
for(int r2 = r1; r2 <= N - 1; r2++) {
if(validRow2[r2][c1][c1 + sz - 1] == true) {
if(dp[r2 - r1 + 1] >= sz) {
ans++;
}
}
else {
break;
}
}
}
}
}
}
else {
for(int i = 1; i <= N; i++) {
for(int j = 1; j <= M; j++) {
qs[i][j] = qs[i - 1][j] + qs[i][j - 1] - qs[i - 1][j - 1] + A[i][j];
}
}
for(int i = 1; i <= N; i++) {
for(int j = 1; j <= M; j++) {
if(A[i][j] == 0 and visited[i][j] == false) {
visited[i][j] = true;
int minR = N, maxR = 1, minC = M, maxC = 1;
queue <pair <int, int>> q;
q.emplace(i, j);
while(!q.empty()) {
auto [ux, uy] = q.front();
q.pop();
minR = min(minR, ux);
maxR = max(maxR, ux);
minC = min(minC, uy);
maxC = max(maxC, uy);
for(int ii = 0; ii < 4; ii++) {
int vx = ux + d[ii][0], vy = uy + d[ii][1];
if(vx < 1 or vx > N or vy < 1 or vy > M) {
continue;
}
if(visited[vx][vy] == false and A[vx][vy] == 0) {
visited[vx][vy] = true;
q.emplace(vx, vy);
}
}
}
if(minR > 1 and minC > 1 and maxR < N and maxC < M and qs[maxR][maxC] - qs[maxR][minC - 1] - qs[minR - 1][maxC] + qs[minR - 1][minC - 1] == 0) {
ans++;
}
}
}
}
}
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
468 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
468 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
5 ms |
1620 KB |
Output is correct |
23 |
Correct |
5 ms |
1640 KB |
Output is correct |
24 |
Correct |
9 ms |
1632 KB |
Output is correct |
25 |
Correct |
4 ms |
1620 KB |
Output is correct |
26 |
Correct |
4 ms |
1624 KB |
Output is correct |
27 |
Correct |
4 ms |
1620 KB |
Output is correct |
28 |
Correct |
4 ms |
1620 KB |
Output is correct |
29 |
Correct |
2 ms |
980 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
5 ms |
1620 KB |
Output is correct |
18 |
Correct |
5 ms |
1640 KB |
Output is correct |
19 |
Correct |
9 ms |
1632 KB |
Output is correct |
20 |
Correct |
4 ms |
1620 KB |
Output is correct |
21 |
Correct |
4 ms |
1624 KB |
Output is correct |
22 |
Correct |
4 ms |
1620 KB |
Output is correct |
23 |
Correct |
4 ms |
1620 KB |
Output is correct |
24 |
Correct |
2 ms |
980 KB |
Output is correct |
25 |
Correct |
0 ms |
212 KB |
Output is correct |
26 |
Correct |
0 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
468 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
212 KB |
Output is correct |
30 |
Correct |
63 ms |
8404 KB |
Output is correct |
31 |
Correct |
66 ms |
8404 KB |
Output is correct |
32 |
Correct |
67 ms |
8404 KB |
Output is correct |
33 |
Correct |
52 ms |
8416 KB |
Output is correct |
34 |
Correct |
49 ms |
8424 KB |
Output is correct |
35 |
Correct |
46 ms |
8416 KB |
Output is correct |
36 |
Correct |
46 ms |
8404 KB |
Output is correct |
37 |
Correct |
46 ms |
8300 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
5 ms |
1620 KB |
Output is correct |
18 |
Correct |
5 ms |
1640 KB |
Output is correct |
19 |
Correct |
9 ms |
1632 KB |
Output is correct |
20 |
Correct |
4 ms |
1620 KB |
Output is correct |
21 |
Correct |
4 ms |
1624 KB |
Output is correct |
22 |
Correct |
4 ms |
1620 KB |
Output is correct |
23 |
Correct |
4 ms |
1620 KB |
Output is correct |
24 |
Correct |
2 ms |
980 KB |
Output is correct |
25 |
Correct |
63 ms |
8404 KB |
Output is correct |
26 |
Correct |
66 ms |
8404 KB |
Output is correct |
27 |
Correct |
67 ms |
8404 KB |
Output is correct |
28 |
Correct |
52 ms |
8416 KB |
Output is correct |
29 |
Correct |
49 ms |
8424 KB |
Output is correct |
30 |
Correct |
46 ms |
8416 KB |
Output is correct |
31 |
Correct |
46 ms |
8404 KB |
Output is correct |
32 |
Correct |
46 ms |
8300 KB |
Output is correct |
33 |
Correct |
0 ms |
212 KB |
Output is correct |
34 |
Correct |
0 ms |
212 KB |
Output is correct |
35 |
Correct |
1 ms |
468 KB |
Output is correct |
36 |
Correct |
0 ms |
340 KB |
Output is correct |
37 |
Correct |
0 ms |
212 KB |
Output is correct |
38 |
Correct |
1753 ms |
98560 KB |
Output is correct |
39 |
Correct |
1759 ms |
98564 KB |
Output is correct |
40 |
Correct |
1729 ms |
98500 KB |
Output is correct |
41 |
Correct |
1784 ms |
98564 KB |
Output is correct |
42 |
Correct |
4034 ms |
98636 KB |
Output is correct |
43 |
Correct |
4324 ms |
101772 KB |
Output is correct |
44 |
Correct |
4258 ms |
102120 KB |
Output is correct |
45 |
Correct |
4387 ms |
95616 KB |
Output is correct |
46 |
Correct |
1796 ms |
99532 KB |
Output is correct |
47 |
Correct |
1724 ms |
99528 KB |
Output is correct |
48 |
Correct |
1701 ms |
100352 KB |
Output is correct |
49 |
Correct |
1763 ms |
102268 KB |
Output is correct |
50 |
Correct |
727 ms |
51444 KB |
Output is correct |
51 |
Correct |
677 ms |
51436 KB |
Output is correct |
52 |
Correct |
1755 ms |
101328 KB |
Output is correct |
53 |
Correct |
1741 ms |
102276 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
23 ms |
4948 KB |
Output is correct |
2 |
Correct |
18 ms |
3796 KB |
Output is correct |
3 |
Correct |
18 ms |
4948 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
20 ms |
5012 KB |
Output is correct |
6 |
Correct |
18 ms |
4996 KB |
Output is correct |
7 |
Correct |
18 ms |
4948 KB |
Output is correct |
8 |
Correct |
16 ms |
5004 KB |
Output is correct |
9 |
Correct |
18 ms |
4948 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
148 ms |
49076 KB |
Output is correct |
8 |
Correct |
315 ms |
103984 KB |
Output is correct |
9 |
Correct |
311 ms |
104732 KB |
Output is correct |
10 |
Correct |
317 ms |
104728 KB |
Output is correct |
11 |
Correct |
138 ms |
51708 KB |
Output is correct |
12 |
Correct |
266 ms |
100060 KB |
Output is correct |
13 |
Correct |
302 ms |
104596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
5 ms |
1620 KB |
Output is correct |
18 |
Correct |
5 ms |
1640 KB |
Output is correct |
19 |
Correct |
9 ms |
1632 KB |
Output is correct |
20 |
Correct |
4 ms |
1620 KB |
Output is correct |
21 |
Correct |
4 ms |
1624 KB |
Output is correct |
22 |
Correct |
4 ms |
1620 KB |
Output is correct |
23 |
Correct |
4 ms |
1620 KB |
Output is correct |
24 |
Correct |
2 ms |
980 KB |
Output is correct |
25 |
Correct |
63 ms |
8404 KB |
Output is correct |
26 |
Correct |
66 ms |
8404 KB |
Output is correct |
27 |
Correct |
67 ms |
8404 KB |
Output is correct |
28 |
Correct |
52 ms |
8416 KB |
Output is correct |
29 |
Correct |
49 ms |
8424 KB |
Output is correct |
30 |
Correct |
46 ms |
8416 KB |
Output is correct |
31 |
Correct |
46 ms |
8404 KB |
Output is correct |
32 |
Correct |
46 ms |
8300 KB |
Output is correct |
33 |
Correct |
1753 ms |
98560 KB |
Output is correct |
34 |
Correct |
1759 ms |
98564 KB |
Output is correct |
35 |
Correct |
1729 ms |
98500 KB |
Output is correct |
36 |
Correct |
1784 ms |
98564 KB |
Output is correct |
37 |
Correct |
4034 ms |
98636 KB |
Output is correct |
38 |
Correct |
4324 ms |
101772 KB |
Output is correct |
39 |
Correct |
4258 ms |
102120 KB |
Output is correct |
40 |
Correct |
4387 ms |
95616 KB |
Output is correct |
41 |
Correct |
1796 ms |
99532 KB |
Output is correct |
42 |
Correct |
1724 ms |
99528 KB |
Output is correct |
43 |
Correct |
1701 ms |
100352 KB |
Output is correct |
44 |
Correct |
1763 ms |
102268 KB |
Output is correct |
45 |
Correct |
727 ms |
51444 KB |
Output is correct |
46 |
Correct |
677 ms |
51436 KB |
Output is correct |
47 |
Correct |
1755 ms |
101328 KB |
Output is correct |
48 |
Correct |
1741 ms |
102276 KB |
Output is correct |
49 |
Correct |
23 ms |
4948 KB |
Output is correct |
50 |
Correct |
18 ms |
3796 KB |
Output is correct |
51 |
Correct |
18 ms |
4948 KB |
Output is correct |
52 |
Correct |
0 ms |
212 KB |
Output is correct |
53 |
Correct |
20 ms |
5012 KB |
Output is correct |
54 |
Correct |
18 ms |
4996 KB |
Output is correct |
55 |
Correct |
18 ms |
4948 KB |
Output is correct |
56 |
Correct |
16 ms |
5004 KB |
Output is correct |
57 |
Correct |
18 ms |
4948 KB |
Output is correct |
58 |
Correct |
0 ms |
340 KB |
Output is correct |
59 |
Correct |
0 ms |
340 KB |
Output is correct |
60 |
Correct |
1 ms |
340 KB |
Output is correct |
61 |
Correct |
148 ms |
49076 KB |
Output is correct |
62 |
Correct |
315 ms |
103984 KB |
Output is correct |
63 |
Correct |
311 ms |
104732 KB |
Output is correct |
64 |
Correct |
317 ms |
104728 KB |
Output is correct |
65 |
Correct |
138 ms |
51708 KB |
Output is correct |
66 |
Correct |
266 ms |
100060 KB |
Output is correct |
67 |
Correct |
302 ms |
104596 KB |
Output is correct |
68 |
Correct |
0 ms |
212 KB |
Output is correct |
69 |
Correct |
0 ms |
212 KB |
Output is correct |
70 |
Correct |
1 ms |
468 KB |
Output is correct |
71 |
Correct |
0 ms |
340 KB |
Output is correct |
72 |
Correct |
0 ms |
212 KB |
Output is correct |
73 |
Incorrect |
266 ms |
111488 KB |
Output isn't correct |
74 |
Halted |
0 ms |
0 KB |
- |