oj.uz

Submission #387330

# Submission time Handle Problem Language Result Execution time Memory
387330 2021-04-08T09:16:42 Z SeDunion Event Hopping 2 (JOI21_event2) C++17
100 / 100
 722 ms 88296 KB 
#include<bits/stdc++.h>
#ifndef LOCAL
#define cerr if(false)cerr
#endif // LOCAL
using namespace std;
using ll = long long;
const int N = 1e6 + 66;
const int LOG = 20;

struct el {
	int l, r, i;
} e[N];

int n, k;

int sp[N][LOG];

int cnt(int l, int r) {
	int res = 0;
	for (int j = LOG - 1 ; j >= 0 ; -- j) {
		if (sp[l][j] <= r) {
			res += (1 << j);
			l = sp[l][j];
		}
	}
	return res;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	cin >> n >> k;
	vector<int>vals;
	for (int i = 1 ; i <= n ; ++ i) {
		cin >> e[i].l >> e[i].r; e[i].i = i;
		vals.emplace_back(e[i].l);
		vals.emplace_back(e[i].r);
	}
	sort(vals.begin(), vals.end());
	for (int i = 1 ; i <= n ; ++ i) {
		e[i].l = lower_bound(vals.begin(), vals.end(), e[i].l) - vals.begin();
		e[i].r = lower_bound(vals.begin(), vals.end(), e[i].r) - vals.begin();
	}
	for (int j = 0 ; j < LOG ; ++ j) for (int i = 0 ; i < N ; ++ i) sp[i][j] = N - 1;
	for (int i = 1 ; i <= n ; ++ i) {
		sp[e[i].l][0] = min(sp[e[i].l][0], e[i].r);
	}
	for (int i = N - 1 ; i > 0 ; -- i) {
		sp[i - 1][0] = min(sp[i - 1][0], sp[i][0]);
	}
	for (int j = 1 ; j < LOG ; ++ j) {
		for (int i = 0 ; i < N ; ++ i) {
			sp[i][j] = sp[sp[i][j - 1]][j - 1];
		}
		for (int i = N - 1 ; i > 0 ; -- i) {
			sp[i - 1][j] = min(sp[i - 1][j], sp[i][j]);
		}
	}
	set<pair<int,int>>s={{0, N - 2}};
	int cur = cnt(0, N - 2);
	if (cur < k) {
		cout << -1;
		return 0;
	}
	vector<int>ans;
	for (int i = 1 ; i <= n ; ++ i) {
		int L = e[i].l, R = e[i].r;
		auto it = s.upper_bound(pair{L, N});
		it--;
		int l = it->first, r = it->second;
		if (l <= L && R <= r) {
			if (cur + 1 - cnt(l, r) + cnt(l, L) + cnt(R, r) >= k) {
				cur = cur + 1 - cnt(l, r) + cnt(l, L) + cnt(R, r);
				ans.emplace_back(i);
				s.erase(it);
				s.insert({l, L});
				s.insert({R, r});
			}
		}
		if ((int)ans.size() == k) {
			break;
		}
	}
	sort(ans.begin(), ans.end());
	for (int i : ans) cout << i << "\n";
	//assert((int)ans.size() == k);
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 78700 KB Output is correct
2 Correct 517 ms 78624 KB Output is correct
3 Correct 527 ms 78572 KB Output is correct
4 Correct 675 ms 87912 KB Output is correct
5 Correct 670 ms 87656 KB Output is correct
6 Correct 670 ms 87272 KB Output is correct
7 Correct 654 ms 86888 KB Output is correct
8 Correct 671 ms 87912 KB Output is correct
9 Correct 658 ms 87656 KB Output is correct
10 Correct 662 ms 87400 KB Output is correct
11 Correct 649 ms 86888 KB Output is correct
12 Correct 640 ms 85864 KB Output is correct
13 Correct 638 ms 85608 KB Output is correct
14 Correct 634 ms 85608 KB Output is correct
15 Correct 622 ms 85480 KB Output is correct
16 Correct 577 ms 83304 KB Output is correct
17 Correct 592 ms 83304 KB Output is correct
18 Correct 589 ms 83176 KB Output is correct
19 Correct 575 ms 82664 KB Output is correct
20 Correct 575 ms 82712 KB Output is correct
21 Correct 567 ms 82792 KB Output is correct
22 Correct 578 ms 82664 KB Output is correct
23 Correct 579 ms 82664 KB Output is correct
24 Correct 573 ms 82664 KB Output is correct
25 Correct 565 ms 82664 KB Output is correct
26 Correct 557 ms 82664 KB Output is correct
27 Correct 560 ms 82792 KB Output is correct
28 Correct 570 ms 82664 KB Output is correct
29 Correct 597 ms 82644 KB Output is correct
30 Correct 584 ms 82664 KB Output is correct
31 Correct 592 ms 82664 KB Output is correct
32 Correct 563 ms 82664 KB Output is correct
33 Correct 572 ms 82664 KB Output is correct
34 Correct 600 ms 84540 KB Output is correct
35 Correct 583 ms 83944 KB Output is correct
36 Correct 585 ms 83304 KB Output is correct
37 Correct 615 ms 85352 KB Output is correct
38 Correct 621 ms 85204 KB Output is correct
39 Correct 617 ms 85096 KB Output is correct
40 Correct 621 ms 85096 KB Output is correct
41 Correct 615 ms 84968 KB Output is correct
42 Correct 578 ms 82664 KB Output is correct
43 Correct 636 ms 85352 KB Output is correct
44 Correct 635 ms 85096 KB Output is correct
45 Correct 634 ms 85096 KB Output is correct
46 Correct 636 ms 84908 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 78572 KB Output is correct
2 Correct 532 ms 78700 KB Output is correct
3 Correct 519 ms 78572 KB Output is correct
4 Correct 523 ms 78700 KB Output is correct
5 Correct 522 ms 78700 KB Output is correct
6 Correct 529 ms 78572 KB Output is correct
7 Correct 517 ms 78700 KB Output is correct
8 Correct 515 ms 78700 KB Output is correct
9 Correct 519 ms 78572 KB Output is correct
10 Correct 516 ms 78572 KB Output is correct
11 Correct 510 ms 78700 KB Output is correct
12 Correct 521 ms 78700 KB Output is correct
13 Correct 518 ms 78700 KB Output is correct
14 Correct 535 ms 78692 KB Output is correct
15 Correct 525 ms 78572 KB Output is correct
16 Correct 513 ms 78716 KB Output is correct
17 Correct 513 ms 78692 KB Output is correct
18 Correct 514 ms 78700 KB Output is correct
19 Correct 529 ms 78692 KB Output is correct
20 Correct 518 ms 78700 KB Output is correct
21 Correct 527 ms 78700 KB Output is correct
22 Correct 526 ms 78700 KB Output is correct
23 Correct 539 ms 78692 KB Output is correct
24 Correct 532 ms 78700 KB Output is correct
25 Correct 544 ms 78700 KB Output is correct
26 Correct 523 ms 78700 KB Output is correct
27 Correct 529 ms 78572 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 78572 KB Output is correct
2 Correct 532 ms 78700 KB Output is correct
3 Correct 519 ms 78572 KB Output is correct
4 Correct 523 ms 78700 KB Output is correct
5 Correct 522 ms 78700 KB Output is correct
6 Correct 529 ms 78572 KB Output is correct
7 Correct 517 ms 78700 KB Output is correct
8 Correct 515 ms 78700 KB Output is correct
9 Correct 519 ms 78572 KB Output is correct
10 Correct 516 ms 78572 KB Output is correct
11 Correct 510 ms 78700 KB Output is correct
12 Correct 521 ms 78700 KB Output is correct
13 Correct 518 ms 78700 KB Output is correct
14 Correct 535 ms 78692 KB Output is correct
15 Correct 525 ms 78572 KB Output is correct
16 Correct 513 ms 78716 KB Output is correct
17 Correct 513 ms 78692 KB Output is correct
18 Correct 514 ms 78700 KB Output is correct
19 Correct 529 ms 78692 KB Output is correct
20 Correct 518 ms 78700 KB Output is correct
21 Correct 527 ms 78700 KB Output is correct
22 Correct 526 ms 78700 KB Output is correct
23 Correct 539 ms 78692 KB Output is correct
24 Correct 532 ms 78700 KB Output is correct
25 Correct 544 ms 78700 KB Output is correct
26 Correct 523 ms 78700 KB Output is correct
27 Correct 529 ms 78572 KB Output is correct
28 Correct 550 ms 78956 KB Output is correct
29 Correct 533 ms 78956 KB Output is correct
30 Correct 539 ms 78844 KB Output is correct
31 Correct 527 ms 78844 KB Output is correct
32 Correct 530 ms 78844 KB Output is correct
33 Correct 522 ms 78828 KB Output is correct
34 Correct 517 ms 78956 KB Output is correct
35 Correct 524 ms 79084 KB Output is correct
36 Correct 517 ms 79084 KB Output is correct
37 Correct 528 ms 78956 KB Output is correct
38 Correct 517 ms 78956 KB Output is correct
39 Correct 523 ms 79084 KB Output is correct
40 Correct 521 ms 78900 KB Output is correct
41 Correct 528 ms 78828 KB Output is correct
42 Correct 513 ms 78828 KB Output is correct
43 Correct 524 ms 78828 KB Output is correct
44 Correct 519 ms 78828 KB Output is correct
45 Correct 526 ms 78828 KB Output is correct
46 Correct 519 ms 78828 KB Output is correct
47 Correct 524 ms 78956 KB Output is correct
48 Correct 529 ms 78844 KB Output is correct
49 Correct 530 ms 78956 KB Output is correct
50 Correct 531 ms 78956 KB Output is correct
51 Correct 526 ms 78828 KB Output is correct
52 Correct 515 ms 78956 KB Output is correct
53 Correct 532 ms 78844 KB Output is correct
54 Correct 528 ms 78844 KB Output is correct
55 Correct 535 ms 78912 KB Output is correct
56 Correct 544 ms 78972 KB Output is correct
57 Correct 543 ms 78972 KB Output is correct
58 Correct 529 ms 78848 KB Output is correct
59 Correct 530 ms 78956 KB Output is correct
60 Correct 518 ms 79084 KB Output is correct
61 Correct 532 ms 78972 KB Output is correct
62 Correct 525 ms 78972 KB Output is correct
63 Correct 522 ms 78956 KB Output is correct
64 Correct 528 ms 78828 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 78700 KB Output is correct
2 Correct 517 ms 78624 KB Output is correct
3 Correct 527 ms 78572 KB Output is correct
4 Correct 675 ms 87912 KB Output is correct
5 Correct 670 ms 87656 KB Output is correct
6 Correct 670 ms 87272 KB Output is correct
7 Correct 654 ms 86888 KB Output is correct
8 Correct 671 ms 87912 KB Output is correct
9 Correct 658 ms 87656 KB Output is correct
10 Correct 662 ms 87400 KB Output is correct
11 Correct 649 ms 86888 KB Output is correct
12 Correct 640 ms 85864 KB Output is correct
13 Correct 638 ms 85608 KB Output is correct
14 Correct 634 ms 85608 KB Output is correct
15 Correct 622 ms 85480 KB Output is correct
16 Correct 577 ms 83304 KB Output is correct
17 Correct 592 ms 83304 KB Output is correct
18 Correct 589 ms 83176 KB Output is correct
19 Correct 575 ms 82664 KB Output is correct
20 Correct 575 ms 82712 KB Output is correct
21 Correct 567 ms 82792 KB Output is correct
22 Correct 578 ms 82664 KB Output is correct
23 Correct 579 ms 82664 KB Output is correct
24 Correct 573 ms 82664 KB Output is correct
25 Correct 565 ms 82664 KB Output is correct
26 Correct 557 ms 82664 KB Output is correct
27 Correct 560 ms 82792 KB Output is correct
28 Correct 570 ms 82664 KB Output is correct
29 Correct 597 ms 82644 KB Output is correct
30 Correct 584 ms 82664 KB Output is correct
31 Correct 592 ms 82664 KB Output is correct
32 Correct 563 ms 82664 KB Output is correct
33 Correct 572 ms 82664 KB Output is correct
34 Correct 600 ms 84540 KB Output is correct
35 Correct 583 ms 83944 KB Output is correct
36 Correct 585 ms 83304 KB Output is correct
37 Correct 615 ms 85352 KB Output is correct
38 Correct 621 ms 85204 KB Output is correct
39 Correct 617 ms 85096 KB Output is correct
40 Correct 621 ms 85096 KB Output is correct
41 Correct 615 ms 84968 KB Output is correct
42 Correct 578 ms 82664 KB Output is correct
43 Correct 636 ms 85352 KB Output is correct
44 Correct 635 ms 85096 KB Output is correct
45 Correct 634 ms 85096 KB Output is correct
46 Correct 636 ms 84908 KB Output is correct
47 Correct 517 ms 78572 KB Output is correct
48 Correct 532 ms 78700 KB Output is correct
49 Correct 519 ms 78572 KB Output is correct
50 Correct 523 ms 78700 KB Output is correct
51 Correct 522 ms 78700 KB Output is correct
52 Correct 529 ms 78572 KB Output is correct
53 Correct 517 ms 78700 KB Output is correct
54 Correct 515 ms 78700 KB Output is correct
55 Correct 519 ms 78572 KB Output is correct
56 Correct 516 ms 78572 KB Output is correct
57 Correct 510 ms 78700 KB Output is correct
58 Correct 521 ms 78700 KB Output is correct
59 Correct 518 ms 78700 KB Output is correct
60 Correct 535 ms 78692 KB Output is correct
61 Correct 525 ms 78572 KB Output is correct
62 Correct 513 ms 78716 KB Output is correct
63 Correct 513 ms 78692 KB Output is correct
64 Correct 514 ms 78700 KB Output is correct
65 Correct 529 ms 78692 KB Output is correct
66 Correct 518 ms 78700 KB Output is correct
67 Correct 527 ms 78700 KB Output is correct
68 Correct 526 ms 78700 KB Output is correct
69 Correct 539 ms 78692 KB Output is correct
70 Correct 532 ms 78700 KB Output is correct
71 Correct 544 ms 78700 KB Output is correct
72 Correct 523 ms 78700 KB Output is correct
73 Correct 529 ms 78572 KB Output is correct
74 Correct 550 ms 78956 KB Output is correct
75 Correct 533 ms 78956 KB Output is correct
76 Correct 539 ms 78844 KB Output is correct
77 Correct 527 ms 78844 KB Output is correct
78 Correct 530 ms 78844 KB Output is correct
79 Correct 522 ms 78828 KB Output is correct
80 Correct 517 ms 78956 KB Output is correct
81 Correct 524 ms 79084 KB Output is correct
82 Correct 517 ms 79084 KB Output is correct
83 Correct 528 ms 78956 KB Output is correct
84 Correct 517 ms 78956 KB Output is correct
85 Correct 523 ms 79084 KB Output is correct
86 Correct 521 ms 78900 KB Output is correct
87 Correct 528 ms 78828 KB Output is correct
88 Correct 513 ms 78828 KB Output is correct
89 Correct 524 ms 78828 KB Output is correct
90 Correct 519 ms 78828 KB Output is correct
91 Correct 526 ms 78828 KB Output is correct
92 Correct 519 ms 78828 KB Output is correct
93 Correct 524 ms 78956 KB Output is correct
94 Correct 529 ms 78844 KB Output is correct
95 Correct 530 ms 78956 KB Output is correct
96 Correct 531 ms 78956 KB Output is correct
97 Correct 526 ms 78828 KB Output is correct
98 Correct 515 ms 78956 KB Output is correct
99 Correct 532 ms 78844 KB Output is correct
100 Correct 528 ms 78844 KB Output is correct
101 Correct 535 ms 78912 KB Output is correct
102 Correct 544 ms 78972 KB Output is correct
103 Correct 543 ms 78972 KB Output is correct
104 Correct 529 ms 78848 KB Output is correct
105 Correct 530 ms 78956 KB Output is correct
106 Correct 518 ms 79084 KB Output is correct
107 Correct 532 ms 78972 KB Output is correct
108 Correct 525 ms 78972 KB Output is correct
109 Correct 522 ms 78956 KB Output is correct
110 Correct 528 ms 78828 KB Output is correct
111 Correct 592 ms 82664 KB Output is correct
112 Correct 599 ms 82664 KB Output is correct
113 Correct 592 ms 82664 KB Output is correct
114 Correct 595 ms 82644 KB Output is correct
115 Correct 595 ms 82664 KB Output is correct
116 Correct 588 ms 82664 KB Output is correct
117 Correct 597 ms 82664 KB Output is correct
118 Correct 722 ms 87960 KB Output is correct
119 Correct 713 ms 87272 KB Output is correct
120 Correct 660 ms 85224 KB Output is correct
121 Correct 585 ms 82664 KB Output is correct
122 Correct 680 ms 85856 KB Output is correct
123 Correct 671 ms 85480 KB Output is correct
124 Correct 656 ms 85320 KB Output is correct
125 Correct 580 ms 82652 KB Output is correct
126 Correct 625 ms 83284 KB Output is correct
127 Correct 615 ms 83224 KB Output is correct
128 Correct 616 ms 83176 KB Output is correct
129 Correct 590 ms 82792 KB Output is correct
130 Correct 604 ms 82920 KB Output is correct
131 Correct 599 ms 82792 KB Output is correct
132 Correct 602 ms 82664 KB Output is correct
133 Correct 586 ms 82792 KB Output is correct
134 Correct 595 ms 82664 KB Output is correct
135 Correct 594 ms 82664 KB Output is correct
136 Correct 592 ms 82648 KB Output is correct
137 Correct 589 ms 82792 KB Output is correct
138 Correct 595 ms 82664 KB Output is correct
139 Correct 589 ms 82664 KB Output is correct
140 Correct 590 ms 82664 KB Output is correct
141 Correct 589 ms 82664 KB Output is correct
142 Correct 675 ms 88296 KB Output is correct
143 Correct 672 ms 88296 KB Output is correct
144 Correct 678 ms 88296 KB Output is correct
145 Correct 688 ms 88216 KB Output is correct
146 Correct 664 ms 88040 KB Output is correct
147 Correct 666 ms 88040 KB Output is correct
148 Correct 674 ms 87912 KB Output is correct
149 Correct 664 ms 87704 KB Output is correct
150 Correct 664 ms 87576 KB Output is correct
151 Correct 658 ms 87016 KB Output is correct
152 Correct 568 ms 82664 KB Output is correct
153 Correct 673 ms 88248 KB Output is correct
154 Correct 671 ms 88232 KB Output is correct
155 Correct 674 ms 88020 KB Output is correct
156 Correct 683 ms 88052 KB Output is correct
157 Correct 666 ms 87744 KB Output is correct
158 Correct 665 ms 87656 KB Output is correct
159 Correct 647 ms 87144 KB Output is correct
160 Correct 563 ms 82664 KB Output is correct
161 Correct 668 ms 85480 KB Output is correct
162 Correct 663 ms 85480 KB Output is correct
163 Correct 652 ms 85224 KB Output is correct
164 Correct 656 ms 85068 KB Output is correct
165 Correct 676 ms 85016 KB Output is correct
166 Correct 561 ms 82664 KB Output is correct
167 Correct 626 ms 85424 KB Output is correct
168 Correct 623 ms 85296 KB Output is correct
169 Correct 620 ms 85096 KB Output is correct
170 Correct 623 ms 85224 KB Output is correct
171 Correct 624 ms 84728 KB Output is correct
172 Correct 610 ms 85480 KB Output is correct
173 Correct 686 ms 85400 KB Output is correct
174 Correct 689 ms 85464 KB Output is correct
175 Correct 697 ms 85352 KB Output is correct
176 Correct 667 ms 85096 KB Output is correct