oj.uz

Submission #1074238

# Submission time Handle Problem Language Result Execution time Memory
1074238 2024-08-25T09:00:05 Z Gromp15 Radio Towers (IOI22_towers) C++17
37 / 100
 712 ms 4048 KB 
#include <bits/stdc++.h>
#include "towers.h"
#define ll long long
#define ar array
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
using namespace std;

template<typename T> bool ckmin(T &a, const T &b ) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b ) { return a < b ? a = b, 1 : 0; }

int n; vector<int> h, h2, pref;
int test(int i) {
	return (i && i+1 < n && ((h[i] > h[i-1] && h[i] > h[i+1])));
}
void init(int N, std::vector<int> H) {
	n = N;
	h = H;
	h2 = H;
	sort(all(h2));
	h2.erase(unique(all(h2)), h2.end());
	for (int &x : h) x = lower_bound(all(h2), x) - h2.begin();
	pref.resize(n);
	for (int i = 0; i < n; i++) {
		pref[i] = test(i) + (i ? pref[i-1] : 0);
	}
}

struct seg {
	int N; vector<int> tree;
	seg(int n) : N(1<<(__lg(n)+1)), tree(2*N, -1e9) {}
	void update(int pos, int x) {
		for (int i = pos + N; i; i >>= 1) ckmax(tree[i], x);
	}
	int query(int node, int nl, int nr, int ql, int qr) {
		if (ql > nr || qr < nl) return -1e9;
		if (ql <= nl && nr <= qr) return tree[node];
		int mid = (nl+nr)/2;
		return max(query(node*2, nl, mid, ql, qr), query(node*2+1, mid+1, nr, ql, qr));
	}
	int query(int l, int r) {
		return query(1, 0, N-1, l, r);
	}
};

int Q = 0;
int max_towers(int L, int R, int D) {
	if (Q++ == 0) {
		const int N = sz(h2);
		seg st0(N), st1(N); 
		for (int i = L; i <= R; i++) {
			auto it = lower_bound(all(h2), h2[h[i]] + D);
			if (it != h2.end()) {
				st1.update(h[i], st0.query(it - h2.begin(), N - 1) + 1);
			}
			auto it2 = upper_bound(all(h2), h2[h[i]] - D);
			if (it2 != h2.begin()) {
				it2--;
				st0.update(h[i], st1.query(0, it2 - h2.begin()));
			}
			st1.update(h[i], 1);
		}
		return st1.query(0, N-1);
	}
	return pref[R] - (L ? pref[L-1] : 0) + 1 - test(L) - test(R) + (L == R ? test(L) : 0);
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 283 ms 2412 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 372 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 500 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 2 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 372 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 500 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 2 ms 344 KB Output is correct
36 Correct 26 ms 2472 KB Output is correct
37 Correct 37 ms 3916 KB Output is correct
38 Correct 48 ms 4040 KB Output is correct
39 Correct 31 ms 3884 KB Output is correct
40 Correct 33 ms 4016 KB Output is correct
41 Correct 74 ms 4040 KB Output is correct
42 Correct 33 ms 3912 KB Output is correct
43 Correct 26 ms 3924 KB Output is correct
44 Correct 19 ms 4048 KB Output is correct
45 Correct 16 ms 4048 KB Output is correct
46 Correct 15 ms 4028 KB Output is correct
47 Correct 47 ms 4048 KB Output is correct
48 Correct 53 ms 4040 KB Output is correct
49 Correct 29 ms 4040 KB Output is correct
50 Correct 22 ms 4048 KB Output is correct
51 Correct 26 ms 4048 KB Output is correct
52 Correct 95 ms 3900 KB Output is correct
53 Correct 74 ms 4048 KB Output is correct
54 Correct 79 ms 4048 KB Output is correct
55 Correct 43 ms 3924 KB Output is correct
56 Correct 42 ms 4048 KB Output is correct
57 Correct 50 ms 3804 KB Output is correct
58 Correct 57 ms 4048 KB Output is correct
59 Correct 67 ms 4048 KB Output is correct
60 Correct 88 ms 3920 KB Output is correct
61 Correct 74 ms 4048 KB Output is correct
62 Correct 62 ms 3916 KB Output is correct
63 Correct 82 ms 4044 KB Output is correct
64 Correct 44 ms 3912 KB Output is correct
65 Correct 38 ms 3920 KB Output is correct
66 Correct 46 ms 3924 KB Output is correct
67 Correct 33 ms 4048 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 485 ms 4016 KB Output is correct
2 Correct 596 ms 4040 KB Output is correct
3 Correct 670 ms 4048 KB Output is correct
4 Correct 614 ms 4048 KB Output is correct
5 Correct 709 ms 4048 KB Output is correct
6 Correct 606 ms 4040 KB Output is correct
7 Correct 712 ms 4044 KB Output is correct
8 Correct 708 ms 4048 KB Output is correct
9 Correct 659 ms 4048 KB Output is correct
10 Correct 644 ms 4048 KB Output is correct
11 Correct 685 ms 4048 KB Output is correct
12 Correct 663 ms 3928 KB Output is correct
13 Correct 672 ms 4028 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 53 ms 4048 KB Output is correct
18 Correct 41 ms 3924 KB Output is correct
19 Correct 30 ms 3924 KB Output is correct
20 Correct 23 ms 4048 KB Output is correct
21 Correct 30 ms 4040 KB Output is correct
22 Correct 84 ms 4020 KB Output is correct
23 Correct 84 ms 4044 KB Output is correct
24 Correct 100 ms 4016 KB Output is correct
25 Correct 45 ms 4024 KB Output is correct
26 Correct 73 ms 4040 KB Output is correct
27 Correct 2 ms 344 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 2 ms 344 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 344 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 188 ms 1432 KB 2nd lines differ - on the 1st token, expected: '7063', found: '8004'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 372 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 500 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 2 ms 344 KB Output is correct
36 Correct 26 ms 2472 KB Output is correct
37 Correct 37 ms 3916 KB Output is correct
38 Correct 48 ms 4040 KB Output is correct
39 Correct 31 ms 3884 KB Output is correct
40 Correct 33 ms 4016 KB Output is correct
41 Correct 74 ms 4040 KB Output is correct
42 Correct 33 ms 3912 KB Output is correct
43 Correct 26 ms 3924 KB Output is correct
44 Correct 19 ms 4048 KB Output is correct
45 Correct 16 ms 4048 KB Output is correct
46 Correct 15 ms 4028 KB Output is correct
47 Correct 47 ms 4048 KB Output is correct
48 Correct 53 ms 4040 KB Output is correct
49 Correct 29 ms 4040 KB Output is correct
50 Correct 22 ms 4048 KB Output is correct
51 Correct 26 ms 4048 KB Output is correct
52 Correct 95 ms 3900 KB Output is correct
53 Correct 74 ms 4048 KB Output is correct
54 Correct 79 ms 4048 KB Output is correct
55 Correct 43 ms 3924 KB Output is correct
56 Correct 42 ms 4048 KB Output is correct
57 Correct 50 ms 3804 KB Output is correct
58 Correct 57 ms 4048 KB Output is correct
59 Correct 67 ms 4048 KB Output is correct
60 Correct 88 ms 3920 KB Output is correct
61 Correct 74 ms 4048 KB Output is correct
62 Correct 62 ms 3916 KB Output is correct
63 Correct 82 ms 4044 KB Output is correct
64 Correct 44 ms 3912 KB Output is correct
65 Correct 38 ms 3920 KB Output is correct
66 Correct 46 ms 3924 KB Output is correct
67 Correct 33 ms 4048 KB Output is correct
68 Correct 485 ms 4016 KB Output is correct
69 Correct 596 ms 4040 KB Output is correct
70 Correct 670 ms 4048 KB Output is correct
71 Correct 614 ms 4048 KB Output is correct
72 Correct 709 ms 4048 KB Output is correct
73 Correct 606 ms 4040 KB Output is correct
74 Correct 712 ms 4044 KB Output is correct
75 Correct 708 ms 4048 KB Output is correct
76 Correct 659 ms 4048 KB Output is correct
77 Correct 644 ms 4048 KB Output is correct
78 Correct 685 ms 4048 KB Output is correct
79 Correct 663 ms 3928 KB Output is correct
80 Correct 672 ms 4028 KB Output is correct
81 Correct 0 ms 344 KB Output is correct
82 Correct 2 ms 344 KB Output is correct
83 Correct 1 ms 344 KB Output is correct
84 Correct 53 ms 4048 KB Output is correct
85 Correct 41 ms 3924 KB Output is correct
86 Correct 30 ms 3924 KB Output is correct
87 Correct 23 ms 4048 KB Output is correct
88 Correct 30 ms 4040 KB Output is correct
89 Correct 84 ms 4020 KB Output is correct
90 Correct 84 ms 4044 KB Output is correct
91 Correct 100 ms 4016 KB Output is correct
92 Correct 45 ms 4024 KB Output is correct
93 Correct 73 ms 4040 KB Output is correct
94 Correct 2 ms 344 KB Output is correct
95 Correct 2 ms 344 KB Output is correct
96 Correct 1 ms 344 KB Output is correct
97 Correct 1 ms 344 KB Output is correct
98 Correct 1 ms 344 KB Output is correct
99 Correct 1 ms 344 KB Output is correct
100 Correct 1 ms 344 KB Output is correct
101 Correct 2 ms 344 KB Output is correct
102 Correct 1 ms 344 KB Output is correct
103 Correct 1 ms 344 KB Output is correct
104 Incorrect 557 ms 3828 KB 2nd lines differ - on the 1st token, expected: '18702', found: '21427'
105 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 283 ms 2412 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -