oj.uz

Submission #740490

# Submission time Handle Problem Language Result Execution time Memory
740490 2023-05-12T15:03:00 Z alex_2008 Radio Towers (IOI22_towers) C++17
27 / 100
 4000 ms 12816 KB 
#include "towers.h"
#include <iostream>
#include <vector>
#include <cmath>
#include <set>
#include <algorithm>
using namespace std;
int ind = -1;
bool ch = true;
vector <int> h;
const int N = 100100, M = 20;
int mx[N][M], Left[N], Right[N];
void init(int n, vector<int> a) {
	ch = true;
	ind = -1;
	h = a;
	for (int i = 0; i < n - 1; ++i)
	{
		if (a[i] > a[i + 1]) {
			if (ind == -1) ind = i;
		}
		else {
			if (ind != -1) ch = false;
		}
	}
	for (int i = 0; i < n; i++) {
		mx[i][0] = a[i];
	}
	for (int j = 1; j < 20; j++) {
		for (int i = n - 1; i >= 0; i--) {
			mx[i][j] = max(mx[i][j - 1], mx[min(n, i + (1 << (j - 1)))][j - 1]);
		}
	}
}
int findmaxinrange(int L, int R) {
	int u = log2(R - L + 1);
	return max(mx[L][u], mx[R - (1 << u) + 1][u]);
}
int max_towers(int L, int R, int D) {
	if (ch) {
		if (R < ind || L > ind) return 1;
		if (h[ind] >= (max(h[L], h[R]) + D)) return 2;
		return 1;
	}
	int n = (int)h.size();
	vector <pair<int, int>> v;
	set <int> ms;
	for (int i = 0; i < n; i++) {
		int l = 0, r = i - 1;
		Left[i] = -1;
		while (l <= r) {
			int mid = (l + r) / 2;
			if (findmaxinrange(mid, i - 1) >= h[i] + D) {
				Left[i] = mid;
				l = mid + 1;
			}
			else r = mid - 1;
		}
		Right[i] = n;
		l = i + 1, r = n - 1;
		while (l <= r) {
			int mid = (l + r) / 2;
			if (findmaxinrange(i + 1, mid) >= h[i] + D) {
				Right[i] = mid;
				r = mid - 1;
			}
			else l = mid + 1;
		}
		v.push_back({ h[i], i });
	}
	int ans = 0;
	sort(v.begin(), v.end());
	for (auto q : v) {
		int ind = q.second;
		if (ind > R || ind < L) continue;
		auto it = ms.lower_bound(ind);
		if (it != ms.begin()) {
			it--;
			if (*it > Left[ind]) continue;
		}
		it = ms.lower_bound(ind);
		if (it != ms.end() && *it < Right[ind]) {
			continue;
		}
		ms.insert(ind);
		++ans;
	}
	return ans;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 407 ms 5676 KB Output is correct
2 Correct 908 ms 9276 KB Output is correct
3 Correct 832 ms 9328 KB Output is correct
4 Correct 895 ms 9264 KB Output is correct
5 Correct 744 ms 9264 KB Output is correct
6 Correct 829 ms 9296 KB Output is correct
7 Correct 698 ms 9288 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 3 ms 428 KB Output is correct
3 Correct 2 ms 464 KB Output is correct
4 Correct 2 ms 464 KB Output is correct
5 Correct 2 ms 464 KB Output is correct
6 Correct 2 ms 464 KB Output is correct
7 Correct 2 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 2 ms 464 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 2 ms 464 KB Output is correct
16 Correct 2 ms 432 KB Output is correct
17 Correct 2 ms 464 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 2 ms 464 KB Output is correct
20 Correct 2 ms 432 KB Output is correct
21 Correct 3 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 2 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 3 ms 464 KB Output is correct
29 Correct 2 ms 464 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 3 ms 428 KB Output is correct
3 Correct 2 ms 464 KB Output is correct
4 Correct 2 ms 464 KB Output is correct
5 Correct 2 ms 464 KB Output is correct
6 Correct 2 ms 464 KB Output is correct
7 Correct 2 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 2 ms 464 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 2 ms 464 KB Output is correct
16 Correct 2 ms 432 KB Output is correct
17 Correct 2 ms 464 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 2 ms 464 KB Output is correct
20 Correct 2 ms 432 KB Output is correct
21 Correct 3 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 2 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 3 ms 464 KB Output is correct
29 Correct 2 ms 464 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct
36 Correct 55 ms 7108 KB Output is correct
37 Correct 91 ms 10876 KB Output is correct
38 Correct 90 ms 11028 KB Output is correct
39 Correct 85 ms 10944 KB Output is correct
40 Correct 96 ms 10908 KB Output is correct
41 Correct 100 ms 11336 KB Output is correct
42 Correct 92 ms 10908 KB Output is correct
43 Correct 33 ms 9280 KB Output is correct
44 Correct 22 ms 9280 KB Output is correct
45 Correct 71 ms 10936 KB Output is correct
46 Correct 76 ms 10968 KB Output is correct
47 Correct 101 ms 10916 KB Output is correct
48 Correct 110 ms 10924 KB Output is correct
49 Correct 89 ms 11060 KB Output is correct
50 Correct 31 ms 9256 KB Output is correct
51 Correct 75 ms 10944 KB Output is correct
52 Correct 110 ms 12036 KB Output is correct
53 Correct 112 ms 12784 KB Output is correct
54 Correct 115 ms 12764 KB Output is correct
55 Correct 21 ms 9256 KB Output is correct
56 Correct 74 ms 10908 KB Output is correct
57 Correct 111 ms 10676 KB Output is correct
58 Correct 115 ms 11296 KB Output is correct
59 Correct 136 ms 11552 KB Output is correct
60 Correct 127 ms 12816 KB Output is correct
61 Correct 137 ms 12504 KB Output is correct
62 Correct 120 ms 11932 KB Output is correct
63 Correct 115 ms 12388 KB Output is correct
64 Correct 23 ms 9244 KB Output is correct
65 Correct 24 ms 9384 KB Output is correct
66 Correct 84 ms 11044 KB Output is correct
67 Correct 82 ms 10968 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4032 ms 12760 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4014 ms 3500 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 3 ms 428 KB Output is correct
3 Correct 2 ms 464 KB Output is correct
4 Correct 2 ms 464 KB Output is correct
5 Correct 2 ms 464 KB Output is correct
6 Correct 2 ms 464 KB Output is correct
7 Correct 2 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 2 ms 464 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 2 ms 464 KB Output is correct
16 Correct 2 ms 432 KB Output is correct
17 Correct 2 ms 464 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 2 ms 464 KB Output is correct
20 Correct 2 ms 432 KB Output is correct
21 Correct 3 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 2 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 3 ms 464 KB Output is correct
29 Correct 2 ms 464 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct
36 Correct 55 ms 7108 KB Output is correct
37 Correct 91 ms 10876 KB Output is correct
38 Correct 90 ms 11028 KB Output is correct
39 Correct 85 ms 10944 KB Output is correct
40 Correct 96 ms 10908 KB Output is correct
41 Correct 100 ms 11336 KB Output is correct
42 Correct 92 ms 10908 KB Output is correct
43 Correct 33 ms 9280 KB Output is correct
44 Correct 22 ms 9280 KB Output is correct
45 Correct 71 ms 10936 KB Output is correct
46 Correct 76 ms 10968 KB Output is correct
47 Correct 101 ms 10916 KB Output is correct
48 Correct 110 ms 10924 KB Output is correct
49 Correct 89 ms 11060 KB Output is correct
50 Correct 31 ms 9256 KB Output is correct
51 Correct 75 ms 10944 KB Output is correct
52 Correct 110 ms 12036 KB Output is correct
53 Correct 112 ms 12784 KB Output is correct
54 Correct 115 ms 12764 KB Output is correct
55 Correct 21 ms 9256 KB Output is correct
56 Correct 74 ms 10908 KB Output is correct
57 Correct 111 ms 10676 KB Output is correct
58 Correct 115 ms 11296 KB Output is correct
59 Correct 136 ms 11552 KB Output is correct
60 Correct 127 ms 12816 KB Output is correct
61 Correct 137 ms 12504 KB Output is correct
62 Correct 120 ms 11932 KB Output is correct
63 Correct 115 ms 12388 KB Output is correct
64 Correct 23 ms 9244 KB Output is correct
65 Correct 24 ms 9384 KB Output is correct
66 Correct 84 ms 11044 KB Output is correct
67 Correct 82 ms 10968 KB Output is correct
68 Execution timed out 4032 ms 12760 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 407 ms 5676 KB Output is correct
2 Correct 908 ms 9276 KB Output is correct
3 Correct 832 ms 9328 KB Output is correct
4 Correct 895 ms 9264 KB Output is correct
5 Correct 744 ms 9264 KB Output is correct
6 Correct 829 ms 9296 KB Output is correct
7 Correct 698 ms 9288 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 3 ms 428 KB Output is correct
13 Correct 2 ms 464 KB Output is correct
14 Correct 2 ms 464 KB Output is correct
15 Correct 2 ms 464 KB Output is correct
16 Correct 2 ms 464 KB Output is correct
17 Correct 2 ms 464 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 2 ms 464 KB Output is correct
26 Correct 2 ms 432 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 1 ms 464 KB Output is correct
29 Correct 2 ms 464 KB Output is correct
30 Correct 2 ms 432 KB Output is correct
31 Correct 3 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 2 ms 464 KB Output is correct
37 Correct 2 ms 464 KB Output is correct
38 Correct 3 ms 464 KB Output is correct
39 Correct 2 ms 464 KB Output is correct
40 Correct 2 ms 464 KB Output is correct
41 Correct 2 ms 464 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 1 ms 464 KB Output is correct
44 Correct 2 ms 464 KB Output is correct
45 Correct 2 ms 464 KB Output is correct
46 Correct 55 ms 7108 KB Output is correct
47 Correct 91 ms 10876 KB Output is correct
48 Correct 90 ms 11028 KB Output is correct
49 Correct 85 ms 10944 KB Output is correct
50 Correct 96 ms 10908 KB Output is correct
51 Correct 100 ms 11336 KB Output is correct
52 Correct 92 ms 10908 KB Output is correct
53 Correct 33 ms 9280 KB Output is correct
54 Correct 22 ms 9280 KB Output is correct
55 Correct 71 ms 10936 KB Output is correct
56 Correct 76 ms 10968 KB Output is correct
57 Correct 101 ms 10916 KB Output is correct
58 Correct 110 ms 10924 KB Output is correct
59 Correct 89 ms 11060 KB Output is correct
60 Correct 31 ms 9256 KB Output is correct
61 Correct 75 ms 10944 KB Output is correct
62 Correct 110 ms 12036 KB Output is correct
63 Correct 112 ms 12784 KB Output is correct
64 Correct 115 ms 12764 KB Output is correct
65 Correct 21 ms 9256 KB Output is correct
66 Correct 74 ms 10908 KB Output is correct
67 Correct 111 ms 10676 KB Output is correct
68 Correct 115 ms 11296 KB Output is correct
69 Correct 136 ms 11552 KB Output is correct
70 Correct 127 ms 12816 KB Output is correct
71 Correct 137 ms 12504 KB Output is correct
72 Correct 120 ms 11932 KB Output is correct
73 Correct 115 ms 12388 KB Output is correct
74 Correct 23 ms 9244 KB Output is correct
75 Correct 24 ms 9384 KB Output is correct
76 Correct 84 ms 11044 KB Output is correct
77 Correct 82 ms 10968 KB Output is correct
78 Execution timed out 4032 ms 12760 KB Time limit exceeded
79 Halted 0 ms 0 KB -