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Submission #217514

# Submission time Handle Problem Language Result Execution time Memory
217514 2020-03-30T05:07:09 Z dolphingarlic Rectangles (IOI19_rect) C++14
72 / 100
 2786 ms 539216 KB 
#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 * 3000 + x2) * 3000 + y1) * 3000 + 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();
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory 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 1408 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 5 ms 768 KB Output is correct
9 Correct 5 ms 1408 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 5 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 384 KB Output is correct
17 Correct 9 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 1280 KB Output is correct
20 Correct 5 ms 1408 KB Output is correct
21 Correct 5 ms 640 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory 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 1408 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 5 ms 768 KB Output is correct
9 Correct 5 ms 1408 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 5 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 384 KB Output is correct
17 Correct 9 ms 3456 KB Output is correct
18 Correct 7 ms 3456 KB Output is correct
19 Correct 7 ms 3456 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 3328 KB Output is correct
23 Correct 8 ms 3200 KB Output is correct
24 Correct 7 ms 3072 KB Output is correct
25 Correct 9 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 1280 KB Output is correct
28 Correct 5 ms 1408 KB Output is correct
29 Correct 5 ms 640 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory 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 1408 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 5 ms 768 KB Output is correct
9 Correct 5 ms 1408 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 5 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 384 KB Output is correct
17 Correct 9 ms 3456 KB Output is correct
18 Correct 7 ms 3456 KB Output is correct
19 Correct 7 ms 3456 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 3328 KB Output is correct
23 Correct 8 ms 3200 KB Output is correct
24 Correct 7 ms 3072 KB Output is correct
25 Correct 17 ms 10160 KB Output is correct
26 Correct 17 ms 10160 KB Output is correct
27 Correct 17 ms 10288 KB Output is correct
28 Correct 15 ms 8576 KB Output is correct
29 Correct 17 ms 9216 KB Output is correct
30 Correct 18 ms 9344 KB Output is correct
31 Correct 18 ms 9344 KB Output is correct
32 Correct 17 ms 9216 KB Output is correct
33 Correct 9 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 1280 KB Output is correct
36 Correct 5 ms 1408 KB Output is correct
37 Correct 5 ms 640 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory 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 1408 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 5 ms 768 KB Output is correct
9 Correct 5 ms 1408 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 5 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 384 KB Output is correct
17 Correct 9 ms 3456 KB Output is correct
18 Correct 7 ms 3456 KB Output is correct
19 Correct 7 ms 3456 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 3328 KB Output is correct
23 Correct 8 ms 3200 KB Output is correct
24 Correct 7 ms 3072 KB Output is correct
25 Correct 17 ms 10160 KB Output is correct
26 Correct 17 ms 10160 KB Output is correct
27 Correct 17 ms 10288 KB Output is correct
28 Correct 15 ms 8576 KB Output is correct
29 Correct 17 ms 9216 KB Output is correct
30 Correct 18 ms 9344 KB Output is correct
31 Correct 18 ms 9344 KB Output is correct
32 Correct 17 ms 9216 KB Output is correct
33 Correct 91 ms 43128 KB Output is correct
34 Correct 84 ms 43128 KB Output is correct
35 Correct 84 ms 43388 KB Output is correct
36 Correct 82 ms 43176 KB Output is correct
37 Correct 205 ms 69640 KB Output is correct
38 Correct 203 ms 69764 KB Output is correct
39 Correct 206 ms 69900 KB Output is correct
40 Correct 195 ms 67180 KB Output is correct
41 Correct 106 ms 44024 KB Output is correct
42 Correct 113 ms 44840 KB Output is correct
43 Correct 161 ms 50624 KB Output is correct
44 Correct 162 ms 52536 KB Output is correct
45 Correct 87 ms 37616 KB Output is correct
46 Correct 75 ms 26500 KB Output is correct
47 Correct 154 ms 51572 KB Output is correct
48 Correct 157 ms 52536 KB Output is correct
49 Correct 9 ms 384 KB Output is correct
50 Correct 5 ms 384 KB Output is correct
51 Correct 5 ms 1280 KB Output is correct
52 Correct 5 ms 1408 KB Output is correct
53 Correct 5 ms 640 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 768 KB Output is correct
2 Correct 5 ms 768 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

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 640 KB Output is correct
2 Correct 549 ms 150256 KB Output is correct
3 Correct 1244 ms 300092 KB Output is correct
4 Correct 1214 ms 301624 KB Output is correct
5 Correct 1218 ms 301624 KB Output is correct
6 Correct 420 ms 145784 KB Output is correct
7 Correct 857 ms 286460 KB Output is correct
8 Correct 931 ms 289656 KB Output is correct
9 Correct 9 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 1280 KB Output is correct
12 Correct 5 ms 1408 KB Output is correct
13 Correct 5 ms 640 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory 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 1408 KB Output is correct
7 Correct 5 ms 1280 KB Output is correct
8 Correct 5 ms 768 KB Output is correct
9 Correct 5 ms 1408 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 5 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 384 KB Output is correct
17 Correct 9 ms 3456 KB Output is correct
18 Correct 7 ms 3456 KB Output is correct
19 Correct 7 ms 3456 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 3328 KB Output is correct
23 Correct 8 ms 3200 KB Output is correct
24 Correct 7 ms 3072 KB Output is correct
25 Correct 17 ms 10160 KB Output is correct
26 Correct 17 ms 10160 KB Output is correct
27 Correct 17 ms 10288 KB Output is correct
28 Correct 15 ms 8576 KB Output is correct
29 Correct 17 ms 9216 KB Output is correct
30 Correct 18 ms 9344 KB Output is correct
31 Correct 18 ms 9344 KB Output is correct
32 Correct 17 ms 9216 KB Output is correct
33 Correct 91 ms 43128 KB Output is correct
34 Correct 84 ms 43128 KB Output is correct
35 Correct 84 ms 43388 KB Output is correct
36 Correct 82 ms 43176 KB Output is correct
37 Correct 205 ms 69640 KB Output is correct
38 Correct 203 ms 69764 KB Output is correct
39 Correct 206 ms 69900 KB Output is correct
40 Correct 195 ms 67180 KB Output is correct
41 Correct 106 ms 44024 KB Output is correct
42 Correct 113 ms 44840 KB Output is correct
43 Correct 161 ms 50624 KB Output is correct
44 Correct 162 ms 52536 KB Output is correct
45 Correct 87 ms 37616 KB Output is correct
46 Correct 75 ms 26500 KB Output is correct
47 Correct 154 ms 51572 KB Output is correct
48 Correct 157 ms 52536 KB Output is correct
49 Correct 6 ms 768 KB Output is correct
50 Correct 5 ms 768 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 549 ms 150256 KB Output is correct
62 Correct 1244 ms 300092 KB Output is correct
63 Correct 1214 ms 301624 KB Output is correct
64 Correct 1218 ms 301624 KB Output is correct
65 Correct 420 ms 145784 KB Output is correct
66 Correct 857 ms 286460 KB Output is correct
67 Correct 931 ms 289656 KB Output is correct
68 Correct 1056 ms 269448 KB Output is correct
69 Correct 965 ms 269612 KB Output is correct
70 Correct 947 ms 269432 KB Output is correct
71 Correct 933 ms 269456 KB Output is correct
72 Correct 2786 ms 539216 KB Output is correct
73 Correct 1446 ms 227924 KB Output is correct
74 Correct 1560 ms 291920 KB Output is correct
75 Correct 2573 ms 385496 KB Output is correct
76 Correct 1504 ms 225488 KB Output is correct
77 Correct 2013 ms 342720 KB Output is correct
78 Correct 2680 ms 385244 KB Output is correct
79 Incorrect 1442 ms 225272 KB Output isn't correct
80 Halted 0 ms 0 KB -