oj.uz

Submission #197759

# Submission time Handle Problem Language Result Execution time Memory
197759 2020-01-22T21:04:07 Z Minnakhmetov Rectangles (IOI19_rect) C++14
100 / 100
 3255 ms 679168 KB 
	#include "rect.h"
	#include <bits/stdc++.h>
	using namespace std;

	#define ll long long
	#define all(aaa) aaa.begin(), aaa.end()

	const int N = 2505;
	int stk[N], to_l[N], to_r[N], w[N], last_v[N][N], 
		last_h[N][N], c_v[N][N], c_h[N][N], t[N];
	vector<int> lt[N][N], up[N][N];
	pair<int, int> ls[N];

	void upd(int x, int y) {
		for (; x < N; x |= x + 1)
			t[x] += y;
	}

	int que(int x) {
		int s = 0;
		for (; x >= 0; x = (x & (x + 1)) - 1)
			s += t[x];
		return s;
	}

	void handle(int len) {
		fill(to_l, to_l + len, -1);
		fill(to_r, to_r + len, -1);

		int z = 0;

		for (int i = 0; i < len; i++) {
			while (z > 0 && w[stk[z - 1]] <= w[i]) {
				to_r[stk[--z]] = i;
			}
			stk[z++] = i;
		}

		z = 0;

		for (int i = len - 1; i >= 0; i--) {
			while (z > 0 && w[stk[z - 1]] <= w[i]) {
				to_l[stk[--z]] = i;
			}
			stk[z++] = i;
		}
	}

	ll count_rectangles(vector<vector<int>> a) {
		int n = a.size(),
			m = a[0].size();

		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++)
				w[j] = a[i][j];
			handle(m);
			for (int j = 0; j < m; j++) {
				if (to_l[j] != -1 && to_l[j] + 1 < j) {
					lt[i][j - 1].push_back(to_l[j] + 1);
				}
				if (to_r[j] != -1 && to_l[to_r[j]] != j && j + 1 < to_r[j]) {
					lt[i][to_r[j] - 1].push_back(j + 1);
				}
			}
		}

		for (int j = 0; j < m; j++) {
			for (int i = 0; i < n; i++) {
				w[i] = a[i][j];
			}
			handle(n);
			for (int i = 0; i < n; i++) {
				if (to_l[i] != -1 && to_l[i] + 1 < i) {
					up[i - 1][j].push_back(to_l[i] + 1);
				}
				if (to_r[i] != -1 && to_l[to_r[i]] != i && i + 1 < to_r[i]) {
					up[to_r[i] - 1][j].push_back(i + 1);
				}
			}
		}

		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				last_v[i][j] = -1;
				last_h[i][j] = -1;
			}
		}

		ll ans = 0;

		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				for (int x : lt[i][j]) {
					if (last_v[j][x] != i - 1)
						c_v[j][x] = 0;
					last_v[j][x] = i;
					c_v[j][x]++;
				}

				for (int x : up[i][j]) {
					if (last_h[i][x] != j - 1)
						c_h[i][x] = 0;
					last_h[i][x] = j;
					c_h[i][x]++;
				}

				if (lt[i][j].empty())
					continue;

				sort(all(lt[i][j]));

				int p_lt = lt[i][j].size() - 1;

				int z = 0;

				for (int x : up[i][j]) {
					ls[z++] = {j - c_h[i][x] + 1, x};
				}

				sort(ls, ls + z);

				for (int k = z - 1; k >= 0; k--) {
					while (p_lt >= 0 && lt[i][j][p_lt] >= ls[k].first) {
						upd(i - c_v[j][lt[i][j][p_lt]] + 1, 1);
						p_lt--;
					}
					ans += que(ls[k].second);
				}

				for (int k = p_lt + 1; k < lt[i][j].size(); k++) {
					upd(i - c_v[j][lt[i][j][k]] + 1, -1);
				}
			}
		}

		return ans;
	}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:130:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int k = p_lt + 1; k < lt[i][j].size(); k++) {
                            ~~^~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 295160 KB Output is correct
2 Correct 274 ms 295484 KB Output is correct
3 Correct 275 ms 295416 KB Output is correct
4 Correct 275 ms 295416 KB Output is correct
5 Correct 276 ms 295356 KB Output is correct
6 Correct 277 ms 295544 KB Output is correct
7 Correct 276 ms 295524 KB Output is correct
8 Correct 275 ms 295496 KB Output is correct
9 Correct 277 ms 295548 KB Output is correct
10 Correct 278 ms 295544 KB Output is correct
11 Correct 275 ms 295644 KB Output is correct
12 Correct 277 ms 295620 KB Output is correct
13 Correct 276 ms 295032 KB Output is correct
14 Correct 274 ms 295252 KB Output is correct
15 Correct 274 ms 295160 KB Output is correct
16 Correct 275 ms 295228 KB Output is correct
17 Correct 276 ms 295160 KB Output is correct
18 Correct 276 ms 295032 KB Output is correct
19 Correct 275 ms 295648 KB Output is correct
20 Correct 276 ms 295288 KB Output is correct
21 Correct 278 ms 295160 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 295160 KB Output is correct
2 Correct 274 ms 295484 KB Output is correct
3 Correct 275 ms 295416 KB Output is correct
4 Correct 275 ms 295416 KB Output is correct
5 Correct 276 ms 295356 KB Output is correct
6 Correct 277 ms 295544 KB Output is correct
7 Correct 276 ms 295524 KB Output is correct
8 Correct 275 ms 295496 KB Output is correct
9 Correct 277 ms 295548 KB Output is correct
10 Correct 278 ms 295544 KB Output is correct
11 Correct 275 ms 295644 KB Output is correct
12 Correct 277 ms 295620 KB Output is correct
13 Correct 276 ms 295032 KB Output is correct
14 Correct 274 ms 295252 KB Output is correct
15 Correct 274 ms 295160 KB Output is correct
16 Correct 275 ms 295228 KB Output is correct
17 Correct 278 ms 296128 KB Output is correct
18 Correct 278 ms 295928 KB Output is correct
19 Correct 277 ms 296056 KB Output is correct
20 Correct 280 ms 296568 KB Output is correct
21 Correct 279 ms 296824 KB Output is correct
22 Correct 302 ms 296696 KB Output is correct
23 Correct 279 ms 296704 KB Output is correct
24 Correct 279 ms 296312 KB Output is correct
25 Correct 276 ms 295160 KB Output is correct
26 Correct 276 ms 295032 KB Output is correct
27 Correct 275 ms 295648 KB Output is correct
28 Correct 276 ms 295288 KB Output is correct
29 Correct 278 ms 295160 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 295160 KB Output is correct
2 Correct 274 ms 295484 KB Output is correct
3 Correct 275 ms 295416 KB Output is correct
4 Correct 275 ms 295416 KB Output is correct
5 Correct 276 ms 295356 KB Output is correct
6 Correct 277 ms 295544 KB Output is correct
7 Correct 276 ms 295524 KB Output is correct
8 Correct 275 ms 295496 KB Output is correct
9 Correct 277 ms 295548 KB Output is correct
10 Correct 278 ms 295544 KB Output is correct
11 Correct 275 ms 295644 KB Output is correct
12 Correct 277 ms 295620 KB Output is correct
13 Correct 276 ms 295032 KB Output is correct
14 Correct 274 ms 295252 KB Output is correct
15 Correct 274 ms 295160 KB Output is correct
16 Correct 275 ms 295228 KB Output is correct
17 Correct 278 ms 296128 KB Output is correct
18 Correct 278 ms 295928 KB Output is correct
19 Correct 277 ms 296056 KB Output is correct
20 Correct 280 ms 296568 KB Output is correct
21 Correct 279 ms 296824 KB Output is correct
22 Correct 302 ms 296696 KB Output is correct
23 Correct 279 ms 296704 KB Output is correct
24 Correct 279 ms 296312 KB Output is correct
25 Correct 283 ms 298060 KB Output is correct
26 Correct 284 ms 297976 KB Output is correct
27 Correct 292 ms 298160 KB Output is correct
28 Correct 308 ms 299912 KB Output is correct
29 Correct 291 ms 300556 KB Output is correct
30 Correct 292 ms 300792 KB Output is correct
31 Correct 293 ms 300408 KB Output is correct
32 Correct 294 ms 300408 KB Output is correct
33 Correct 276 ms 295160 KB Output is correct
34 Correct 276 ms 295032 KB Output is correct
35 Correct 275 ms 295648 KB Output is correct
36 Correct 276 ms 295288 KB Output is correct
37 Correct 278 ms 295160 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 295160 KB Output is correct
2 Correct 274 ms 295484 KB Output is correct
3 Correct 275 ms 295416 KB Output is correct
4 Correct 275 ms 295416 KB Output is correct
5 Correct 276 ms 295356 KB Output is correct
6 Correct 277 ms 295544 KB Output is correct
7 Correct 276 ms 295524 KB Output is correct
8 Correct 275 ms 295496 KB Output is correct
9 Correct 277 ms 295548 KB Output is correct
10 Correct 278 ms 295544 KB Output is correct
11 Correct 275 ms 295644 KB Output is correct
12 Correct 277 ms 295620 KB Output is correct
13 Correct 276 ms 295032 KB Output is correct
14 Correct 274 ms 295252 KB Output is correct
15 Correct 274 ms 295160 KB Output is correct
16 Correct 275 ms 295228 KB Output is correct
17 Correct 278 ms 296128 KB Output is correct
18 Correct 278 ms 295928 KB Output is correct
19 Correct 277 ms 296056 KB Output is correct
20 Correct 280 ms 296568 KB Output is correct
21 Correct 279 ms 296824 KB Output is correct
22 Correct 302 ms 296696 KB Output is correct
23 Correct 279 ms 296704 KB Output is correct
24 Correct 279 ms 296312 KB Output is correct
25 Correct 283 ms 298060 KB Output is correct
26 Correct 284 ms 297976 KB Output is correct
27 Correct 292 ms 298160 KB Output is correct
28 Correct 308 ms 299912 KB Output is correct
29 Correct 291 ms 300556 KB Output is correct
30 Correct 292 ms 300792 KB Output is correct
31 Correct 293 ms 300408 KB Output is correct
32 Correct 294 ms 300408 KB Output is correct
33 Correct 335 ms 322012 KB Output is correct
34 Correct 354 ms 328148 KB Output is correct
35 Correct 378 ms 328248 KB Output is correct
36 Correct 393 ms 334328 KB Output is correct
37 Correct 366 ms 317612 KB Output is correct
38 Correct 365 ms 317484 KB Output is correct
39 Correct 367 ms 317668 KB Output is correct
40 Correct 363 ms 316592 KB Output is correct
41 Correct 381 ms 322680 KB Output is correct
42 Correct 407 ms 325340 KB Output is correct
43 Correct 477 ms 332992 KB Output is correct
44 Correct 487 ms 334976 KB Output is correct
45 Correct 382 ms 319480 KB Output is correct
46 Correct 382 ms 318232 KB Output is correct
47 Correct 468 ms 331640 KB Output is correct
48 Correct 475 ms 332692 KB Output is correct
49 Correct 276 ms 295160 KB Output is correct
50 Correct 276 ms 295032 KB Output is correct
51 Correct 275 ms 295648 KB Output is correct
52 Correct 276 ms 295288 KB Output is correct
53 Correct 278 ms 295160 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 285 ms 295340 KB Output is correct
2 Correct 314 ms 295416 KB Output is correct
3 Correct 275 ms 295160 KB Output is correct
4 Correct 275 ms 295032 KB Output is correct
5 Correct 298 ms 313344 KB Output is correct
6 Correct 295 ms 313124 KB Output is correct
7 Correct 296 ms 313256 KB Output is correct
8 Correct 293 ms 312312 KB Output is correct
9 Correct 293 ms 311544 KB Output is correct
10 Correct 285 ms 305336 KB Output is correct
11 Correct 297 ms 310576 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 293 ms 295284 KB Output is correct
2 Correct 897 ms 406136 KB Output is correct
3 Correct 1666 ms 513784 KB Output is correct
4 Correct 1778 ms 515288 KB Output is correct
5 Correct 1667 ms 515504 KB Output is correct
6 Correct 431 ms 344056 KB Output is correct
7 Correct 592 ms 394104 KB Output is correct
8 Correct 587 ms 397048 KB Output is correct
9 Correct 276 ms 295160 KB Output is correct
10 Correct 276 ms 295032 KB Output is correct
11 Correct 275 ms 295648 KB Output is correct
12 Correct 276 ms 295288 KB Output is correct
13 Correct 278 ms 295160 KB Output is correct

Subtask #7
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 295160 KB Output is correct
2 Correct 274 ms 295484 KB Output is correct
3 Correct 275 ms 295416 KB Output is correct
4 Correct 275 ms 295416 KB Output is correct
5 Correct 276 ms 295356 KB Output is correct
6 Correct 277 ms 295544 KB Output is correct
7 Correct 276 ms 295524 KB Output is correct
8 Correct 275 ms 295496 KB Output is correct
9 Correct 277 ms 295548 KB Output is correct
10 Correct 278 ms 295544 KB Output is correct
11 Correct 275 ms 295644 KB Output is correct
12 Correct 277 ms 295620 KB Output is correct
13 Correct 276 ms 295032 KB Output is correct
14 Correct 274 ms 295252 KB Output is correct
15 Correct 274 ms 295160 KB Output is correct
16 Correct 275 ms 295228 KB Output is correct
17 Correct 278 ms 296128 KB Output is correct
18 Correct 278 ms 295928 KB Output is correct
19 Correct 277 ms 296056 KB Output is correct
20 Correct 280 ms 296568 KB Output is correct
21 Correct 279 ms 296824 KB Output is correct
22 Correct 302 ms 296696 KB Output is correct
23 Correct 279 ms 296704 KB Output is correct
24 Correct 279 ms 296312 KB Output is correct
25 Correct 283 ms 298060 KB Output is correct
26 Correct 284 ms 297976 KB Output is correct
27 Correct 292 ms 298160 KB Output is correct
28 Correct 308 ms 299912 KB Output is correct
29 Correct 291 ms 300556 KB Output is correct
30 Correct 292 ms 300792 KB Output is correct
31 Correct 293 ms 300408 KB Output is correct
32 Correct 294 ms 300408 KB Output is correct
33 Correct 335 ms 322012 KB Output is correct
34 Correct 354 ms 328148 KB Output is correct
35 Correct 378 ms 328248 KB Output is correct
36 Correct 393 ms 334328 KB Output is correct
37 Correct 366 ms 317612 KB Output is correct
38 Correct 365 ms 317484 KB Output is correct
39 Correct 367 ms 317668 KB Output is correct
40 Correct 363 ms 316592 KB Output is correct
41 Correct 381 ms 322680 KB Output is correct
42 Correct 407 ms 325340 KB Output is correct
43 Correct 477 ms 332992 KB Output is correct
44 Correct 487 ms 334976 KB Output is correct
45 Correct 382 ms 319480 KB Output is correct
46 Correct 382 ms 318232 KB Output is correct
47 Correct 468 ms 331640 KB Output is correct
48 Correct 475 ms 332692 KB Output is correct
49 Correct 285 ms 295340 KB Output is correct
50 Correct 314 ms 295416 KB Output is correct
51 Correct 275 ms 295160 KB Output is correct
52 Correct 275 ms 295032 KB Output is correct
53 Correct 298 ms 313344 KB Output is correct
54 Correct 295 ms 313124 KB Output is correct
55 Correct 296 ms 313256 KB Output is correct
56 Correct 293 ms 312312 KB Output is correct
57 Correct 293 ms 311544 KB Output is correct
58 Correct 285 ms 305336 KB Output is correct
59 Correct 297 ms 310576 KB Output is correct
60 Correct 293 ms 295284 KB Output is correct
61 Correct 897 ms 406136 KB Output is correct
62 Correct 1666 ms 513784 KB Output is correct
63 Correct 1778 ms 515288 KB Output is correct
64 Correct 1667 ms 515504 KB Output is correct
65 Correct 431 ms 344056 KB Output is correct
66 Correct 592 ms 394104 KB Output is correct
67 Correct 587 ms 397048 KB Output is correct
68 Correct 977 ms 469504 KB Output is correct
69 Correct 1362 ms 594108 KB Output is correct
70 Correct 1892 ms 593476 KB Output is correct
71 Correct 2107 ms 673244 KB Output is correct
72 Correct 1459 ms 509552 KB Output is correct
73 Correct 1933 ms 520408 KB Output is correct
74 Correct 2084 ms 552964 KB Output is correct
75 Correct 3078 ms 650288 KB Output is correct
76 Correct 2001 ms 539496 KB Output is correct
77 Correct 2595 ms 615928 KB Output is correct
78 Correct 3255 ms 679168 KB Output is correct
79 Correct 1910 ms 509336 KB Output is correct
80 Correct 3042 ms 652956 KB Output is correct
81 Correct 2946 ms 642296 KB Output is correct
82 Correct 994 ms 443396 KB Output is correct
83 Correct 1458 ms 510404 KB Output is correct
84 Correct 1459 ms 510584 KB Output is correct
85 Correct 1475 ms 510512 KB Output is correct
86 Correct 276 ms 295160 KB Output is correct
87 Correct 276 ms 295032 KB Output is correct
88 Correct 275 ms 295648 KB Output is correct
89 Correct 276 ms 295288 KB Output is correct
90 Correct 278 ms 295160 KB Output is correct