oj.uz

Submission #966849

# Submission time Handle Problem Language Result Execution time Memory
966849 2024-04-20T13:24:43 Z 42kangaroo Radio Towers (IOI22_towers) C++17
56 / 100
 689 ms 12392 KB 
#include "towers.h"
#include "bits/stdc++.h"

#include <utility>
#include <vector>

std::vector<int> a;

std::vector<std::vector<int>> binT;
std::vector<int> sufMin;
std::vector<int> preMin;

int maxI = 0;

void init(int N, std::vector<int> H) {
	using namespace std;
	a = std::move(H);
	binT.clear();
	sufMin.clear();
	preMin.clear();
}

void binJ(std::vector<int> st) {
	using namespace std;
	binT = vector<vector<int>>(20, vector<int>(st.size() + 1));
	for (int i = 0; i < st.size(); ++i) {
		binT[0][i] = st[i];
	}
	binT[0].back() = st.size();
	for (int i = 1; i < 20; ++i) {
		for (int j = 0; j < st.size() + 1; ++j) {
			binT[i][j] = binT[i - 1][binT[i - 1][j]];
		}
	}
}

int max_towers(int L, int R, int D) {
	using namespace std;
    if (binT.empty()) {
		vector<pair<int,int>> rang(a.size());
		vector<int> st;
	    for (int i = 0; i < a.size(); ++i) {
			while (!st.empty() && a[i] >= a[st.back()]) st.pop_back();
			auto ne = lower_bound(st.rbegin(), st.rend(), a[i] + D, [&](int l, int r){return a[l] < r;});
			if (ne == st.rend()) {
				rang[i].first = -1;
			} else rang[i].first = *ne;
			st.push_back(i);
	    }
		st.clear();
		for (int i = a.size() - 1; i >=0; --i) {
		    while (!st.empty() && a[i] >= a[st.back()]) st.pop_back();
		    auto ne = lower_bound(st.rbegin(), st.rend(), a[i] + D, [&](int l, int r){return a[l] < r;});
		    if (ne == st.rend()) {
			    rang[i].second = a.size();
		    } else rang[i].second = *ne;
		    st.push_back(i);
	    }
		sufMin.resize(a.size() + 1);
		sufMin.back() = 1e9;
	    for (int i = a.size() - 1; i >= 0; --i) {
		    sufMin[i] = min(sufMin[i + 1], rang[i].second);
	    }
	    preMin.resize(a.size() + 1);
	    preMin.front() = -1;
	    for (int i =0; i < a.size(); ++i) {
			preMin[i + 1] = max(preMin[i], rang[i].first);
	    }
		vector<int> evs(a.size(), a.size());
	    for (int i = a.size() - 1; i >= 0; --i) {
		    if (rang[i].first >= 0) evs[rang[i].first] = min(evs[rang[i].first], rang[i].second);
			if (i < a.size() - 1) evs[i] = min(evs[i], evs[i + 1]);
	    }
		binJ(evs);
	}
	int ans = 2;
	L = sufMin[L];
	R = preMin[R + 1];
	if (R < L) return 1;
	for (int i = 19; i >= 0; --i) {
		if (binT[i][L] <= R) {
			L = binT[i][L];
			ans += 1 << i;
		}
	}
	return ans;
}

Compilation message

towers.cpp: In function 'void binJ(std::vector<int>)':
towers.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for (int i = 0; i < st.size(); ++i) {
      |                  ~~^~~~~~~~~~~
towers.cpp:31:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   for (int j = 0; j < st.size() + 1; ++j) {
      |                   ~~^~~~~~~~~~~~~~~
towers.cpp: In function 'int max_towers(int, int, int)':
towers.cpp:42:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |      for (int i = 0; i < a.size(); ++i) {
      |                      ~~^~~~~~~~~~
towers.cpp:66:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |      for (int i =0; i < a.size(); ++i) {
      |                     ~~^~~~~~~~~~
towers.cpp:72:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |    if (i < a.size() - 1) evs[i] = min(evs[i], evs[i + 1]);
      |        ~~^~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 244 ms 7436 KB 31st 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 600 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 2 ms 856 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 832 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 600 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 600 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 600 KB Output is correct
32 Correct 1 ms 600 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 600 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 600 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 2 ms 856 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 832 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 600 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 600 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 600 KB Output is correct
32 Correct 1 ms 600 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 600 KB Output is correct
36 Correct 12 ms 7864 KB Output is correct
37 Correct 19 ms 11580 KB Output is correct
38 Correct 18 ms 11840 KB Output is correct
39 Correct 17 ms 11580 KB Output is correct
40 Correct 17 ms 11576 KB Output is correct
41 Correct 17 ms 11584 KB Output is correct
42 Correct 19 ms 11580 KB Output is correct
43 Correct 21 ms 12220 KB Output is correct
44 Correct 19 ms 12232 KB Output is correct
45 Correct 19 ms 12220 KB Output is correct
46 Correct 19 ms 12048 KB Output is correct
47 Correct 17 ms 11584 KB Output is correct
48 Correct 17 ms 11584 KB Output is correct
49 Correct 16 ms 11968 KB Output is correct
50 Correct 16 ms 12204 KB Output is correct
51 Correct 19 ms 12268 KB Output is correct
52 Correct 17 ms 11732 KB Output is correct
53 Correct 16 ms 11608 KB Output is correct
54 Correct 16 ms 11572 KB Output is correct
55 Correct 16 ms 12220 KB Output is correct
56 Correct 19 ms 12216 KB Output is correct
57 Correct 19 ms 11316 KB Output is correct
58 Correct 19 ms 11580 KB Output is correct
59 Correct 18 ms 11588 KB Output is correct
60 Correct 19 ms 11580 KB Output is correct
61 Correct 17 ms 11584 KB Output is correct
62 Correct 18 ms 11576 KB Output is correct
63 Correct 17 ms 11608 KB Output is correct
64 Correct 20 ms 12140 KB Output is correct
65 Correct 18 ms 12240 KB Output is correct
66 Correct 18 ms 11968 KB Output is correct
67 Correct 18 ms 12392 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 461 ms 11716 KB Output is correct
2 Correct 652 ms 11580 KB Output is correct
3 Correct 587 ms 11580 KB Output is correct
4 Correct 617 ms 11588 KB Output is correct
5 Correct 635 ms 11588 KB Output is correct
6 Correct 619 ms 11584 KB Output is correct
7 Correct 655 ms 11584 KB Output is correct
8 Correct 526 ms 12100 KB Output is correct
9 Correct 526 ms 12220 KB Output is correct
10 Correct 540 ms 12104 KB Output is correct
11 Correct 572 ms 12208 KB Output is correct
12 Correct 507 ms 12176 KB Output is correct
13 Correct 510 ms 12212 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 22 ms 11588 KB Output is correct
18 Correct 16 ms 11608 KB Output is correct
19 Correct 17 ms 11580 KB Output is correct
20 Correct 17 ms 12140 KB Output is correct
21 Correct 16 ms 12132 KB Output is correct
22 Correct 17 ms 11836 KB Output is correct
23 Correct 21 ms 11572 KB Output is correct
24 Correct 16 ms 11584 KB Output is correct
25 Correct 15 ms 12220 KB Output is correct
26 Correct 16 ms 12212 KB Output is correct
27 Correct 1 ms 600 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 600 KB Output is correct
32 Correct 1 ms 600 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 600 KB Output is correct
36 Correct 1 ms 600 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 190 ms 3080 KB 2nd lines differ - on the 1st token, expected: '7063', found: '7197'
2 Halted 0 ms 0 KB -

Subtask #6
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 2 ms 856 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 832 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 600 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 600 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 600 KB Output is correct
32 Correct 1 ms 600 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 600 KB Output is correct
36 Correct 12 ms 7864 KB Output is correct
37 Correct 19 ms 11580 KB Output is correct
38 Correct 18 ms 11840 KB Output is correct
39 Correct 17 ms 11580 KB Output is correct
40 Correct 17 ms 11576 KB Output is correct
41 Correct 17 ms 11584 KB Output is correct
42 Correct 19 ms 11580 KB Output is correct
43 Correct 21 ms 12220 KB Output is correct
44 Correct 19 ms 12232 KB Output is correct
45 Correct 19 ms 12220 KB Output is correct
46 Correct 19 ms 12048 KB Output is correct
47 Correct 17 ms 11584 KB Output is correct
48 Correct 17 ms 11584 KB Output is correct
49 Correct 16 ms 11968 KB Output is correct
50 Correct 16 ms 12204 KB Output is correct
51 Correct 19 ms 12268 KB Output is correct
52 Correct 17 ms 11732 KB Output is correct
53 Correct 16 ms 11608 KB Output is correct
54 Correct 16 ms 11572 KB Output is correct
55 Correct 16 ms 12220 KB Output is correct
56 Correct 19 ms 12216 KB Output is correct
57 Correct 19 ms 11316 KB Output is correct
58 Correct 19 ms 11580 KB Output is correct
59 Correct 18 ms 11588 KB Output is correct
60 Correct 19 ms 11580 KB Output is correct
61 Correct 17 ms 11584 KB Output is correct
62 Correct 18 ms 11576 KB Output is correct
63 Correct 17 ms 11608 KB Output is correct
64 Correct 20 ms 12140 KB Output is correct
65 Correct 18 ms 12240 KB Output is correct
66 Correct 18 ms 11968 KB Output is correct
67 Correct 18 ms 12392 KB Output is correct
68 Correct 461 ms 11716 KB Output is correct
69 Correct 652 ms 11580 KB Output is correct
70 Correct 587 ms 11580 KB Output is correct
71 Correct 617 ms 11588 KB Output is correct
72 Correct 635 ms 11588 KB Output is correct
73 Correct 619 ms 11584 KB Output is correct
74 Correct 655 ms 11584 KB Output is correct
75 Correct 526 ms 12100 KB Output is correct
76 Correct 526 ms 12220 KB Output is correct
77 Correct 540 ms 12104 KB Output is correct
78 Correct 572 ms 12208 KB Output is correct
79 Correct 507 ms 12176 KB Output is correct
80 Correct 510 ms 12212 KB Output is correct
81 Correct 1 ms 344 KB Output is correct
82 Correct 1 ms 600 KB Output is correct
83 Correct 1 ms 600 KB Output is correct
84 Correct 22 ms 11588 KB Output is correct
85 Correct 16 ms 11608 KB Output is correct
86 Correct 17 ms 11580 KB Output is correct
87 Correct 17 ms 12140 KB Output is correct
88 Correct 16 ms 12132 KB Output is correct
89 Correct 17 ms 11836 KB Output is correct
90 Correct 21 ms 11572 KB Output is correct
91 Correct 16 ms 11584 KB Output is correct
92 Correct 15 ms 12220 KB Output is correct
93 Correct 16 ms 12212 KB Output is correct
94 Correct 1 ms 600 KB Output is correct
95 Correct 1 ms 600 KB Output is correct
96 Correct 1 ms 600 KB Output is correct
97 Correct 1 ms 600 KB Output is correct
98 Correct 1 ms 600 KB Output is correct
99 Correct 1 ms 600 KB Output is correct
100 Correct 1 ms 600 KB Output is correct
101 Correct 1 ms 600 KB Output is correct
102 Correct 1 ms 600 KB Output is correct
103 Correct 1 ms 600 KB Output is correct
104 Correct 512 ms 10356 KB Output is correct
105 Correct 625 ms 11836 KB Output is correct
106 Correct 655 ms 11576 KB Output is correct
107 Correct 639 ms 11576 KB Output is correct
108 Correct 656 ms 11760 KB Output is correct
109 Correct 689 ms 11560 KB Output is correct
110 Correct 647 ms 11720 KB Output is correct
111 Correct 523 ms 12216 KB Output is correct
112 Correct 572 ms 12360 KB Output is correct
113 Correct 568 ms 12216 KB Output is correct
114 Correct 572 ms 11968 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 244 ms 7436 KB 31st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -