oj.uz

답안 #528898

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
528898 2022-02-21T17:32:15 Z dutch Event Hopping 2 (JOI21_event2) C++17
100 / 100
 157 ms 16448 KB 
#include <bits/stdc++.h>
using namespace std;

const int Z = 1e5+2, B = 17, INF = 2e9;

int N, K, L[Z], R[Z], p[Z][B];
set<array<int, 3>> s;

int solve(int i, int r) {
	int res = 1;
	for(int k = B; k--; )
		if(p[i][k] <= N && R[p[i][k]] <= r)
			i = p[i][k], res += 1<<k;
	return res;
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	cin >> N >> K;

	array<int, 2> pts[N * 2];

	for(int i = 1; i <= N; ++i) {
		cin >> L[i] >> R[i];
		--R[i];

		pts[2 * i - 1] = {-L[i], +i};
		pts[2 * i - 2] = {-R[i], -i};
	}

	L[N+1] = R[N+1] = INF;

	sort(pts, pts + N * 2);
	int j = N + 1;

	p[0][0] = min_element(R+1, R+N+1) - R;
	p[N+1][0] = N+1;

	for(auto &[x, i] : pts) {
		if(i < 0)
			p[-i][0] = j;
		else if(R[i] < R[j])
			j = i;
	}

	for(j = 0; j + 1 < B; ++j)
		for(int i = 0; i <= N + 1; ++i)
			p[i][j+1] = p[p[i][j]][j];

	int sum = solve(0, INF - 1) - 1, req = K;

	if(sum < K) {
		cout << -1;
		return 0;
	}

	s.insert({L[0], 0, sum+1});
	s.insert({L[N+1], N+1, 0});

	for(int i = 1; i <= N && req; ++i) {
		auto f = s.lower_bound({R[i] + 1});
		auto fR = *f, fL = *prev(f);

		if(R[fL[1]] >= L[i]) continue;

		int canL = solve(fL[1], L[i] - 1);
		int canR = solve(i, fR[0] - 1);

		if(sum - fL[2] + canL + canR < K) continue;
		
		--req;

		sum += canL + canR - fL[2];

		s.erase(prev(f));
		s.insert({fL[0], fL[1], canL});
		s.insert({L[i], i, canR});

		cout << i << '\n';
	}
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 112 ms 15904 KB Output is correct
5 Correct 109 ms 15560 KB Output is correct
6 Correct 98 ms 15252 KB Output is correct
7 Correct 93 ms 14660 KB Output is correct
8 Correct 101 ms 15940 KB Output is correct
9 Correct 101 ms 15636 KB Output is correct
10 Correct 103 ms 15296 KB Output is correct
11 Correct 91 ms 14652 KB Output is correct
12 Correct 84 ms 13480 KB Output is correct
13 Correct 96 ms 13312 KB Output is correct
14 Correct 87 ms 13124 KB Output is correct
15 Correct 70 ms 12652 KB Output is correct
16 Correct 52 ms 10448 KB Output is correct
17 Correct 62 ms 10416 KB Output is correct
18 Correct 49 ms 10308 KB Output is correct
19 Correct 43 ms 9660 KB Output is correct
20 Correct 41 ms 9672 KB Output is correct
21 Correct 41 ms 9592 KB Output is correct
22 Correct 41 ms 9520 KB Output is correct
23 Correct 41 ms 9536 KB Output is correct
24 Correct 47 ms 9540 KB Output is correct
25 Correct 56 ms 9540 KB Output is correct
26 Correct 43 ms 9628 KB Output is correct
27 Correct 45 ms 9536 KB Output is correct
28 Correct 32 ms 9536 KB Output is correct
29 Correct 38 ms 9680 KB Output is correct
30 Correct 36 ms 9616 KB Output is correct
31 Correct 36 ms 9540 KB Output is correct
32 Correct 39 ms 9524 KB Output is correct
33 Correct 41 ms 9536 KB Output is correct
34 Correct 63 ms 11880 KB Output is correct
35 Correct 54 ms 11084 KB Output is correct
36 Correct 41 ms 10308 KB Output is correct
37 Correct 87 ms 12968 KB Output is correct
38 Correct 88 ms 12828 KB Output is correct
39 Correct 87 ms 12748 KB Output is correct
40 Correct 74 ms 12644 KB Output is correct
41 Correct 73 ms 12488 KB Output is correct
42 Correct 42 ms 9540 KB Output is correct
43 Correct 80 ms 12852 KB Output is correct
44 Correct 83 ms 12704 KB Output is correct
45 Correct 76 ms 12604 KB Output is correct
46 Correct 75 ms 12476 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 324 KB Output is correct
27 Correct 1 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 324 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 2 ms 584 KB Output is correct
29 Correct 2 ms 588 KB Output is correct
30 Correct 3 ms 592 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 2 ms 588 KB Output is correct
33 Correct 2 ms 564 KB Output is correct
34 Correct 2 ms 548 KB Output is correct
35 Correct 3 ms 844 KB Output is correct
36 Correct 3 ms 716 KB Output is correct
37 Correct 3 ms 716 KB Output is correct
38 Correct 2 ms 588 KB Output is correct
39 Correct 3 ms 720 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 3 ms 688 KB Output is correct
42 Correct 2 ms 588 KB Output is correct
43 Correct 2 ms 716 KB Output is correct
44 Correct 2 ms 716 KB Output is correct
45 Correct 3 ms 716 KB Output is correct
46 Correct 3 ms 588 KB Output is correct
47 Correct 2 ms 588 KB Output is correct
48 Correct 3 ms 588 KB Output is correct
49 Correct 2 ms 592 KB Output is correct
50 Correct 3 ms 588 KB Output is correct
51 Correct 3 ms 588 KB Output is correct
52 Correct 2 ms 588 KB Output is correct
53 Correct 2 ms 668 KB Output is correct
54 Correct 2 ms 588 KB Output is correct
55 Correct 3 ms 844 KB Output is correct
56 Correct 3 ms 844 KB Output is correct
57 Correct 3 ms 844 KB Output is correct
58 Correct 3 ms 844 KB Output is correct
59 Correct 3 ms 844 KB Output is correct
60 Correct 3 ms 844 KB Output is correct
61 Correct 3 ms 844 KB Output is correct
62 Correct 3 ms 844 KB Output is correct
63 Correct 4 ms 716 KB Output is correct
64 Correct 2 ms 588 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 112 ms 15904 KB Output is correct
5 Correct 109 ms 15560 KB Output is correct
6 Correct 98 ms 15252 KB Output is correct
7 Correct 93 ms 14660 KB Output is correct
8 Correct 101 ms 15940 KB Output is correct
9 Correct 101 ms 15636 KB Output is correct
10 Correct 103 ms 15296 KB Output is correct
11 Correct 91 ms 14652 KB Output is correct
12 Correct 84 ms 13480 KB Output is correct
13 Correct 96 ms 13312 KB Output is correct
14 Correct 87 ms 13124 KB Output is correct
15 Correct 70 ms 12652 KB Output is correct
16 Correct 52 ms 10448 KB Output is correct
17 Correct 62 ms 10416 KB Output is correct
18 Correct 49 ms 10308 KB Output is correct
19 Correct 43 ms 9660 KB Output is correct
20 Correct 41 ms 9672 KB Output is correct
21 Correct 41 ms 9592 KB Output is correct
22 Correct 41 ms 9520 KB Output is correct
23 Correct 41 ms 9536 KB Output is correct
24 Correct 47 ms 9540 KB Output is correct
25 Correct 56 ms 9540 KB Output is correct
26 Correct 43 ms 9628 KB Output is correct
27 Correct 45 ms 9536 KB Output is correct
28 Correct 32 ms 9536 KB Output is correct
29 Correct 38 ms 9680 KB Output is correct
30 Correct 36 ms 9616 KB Output is correct
31 Correct 36 ms 9540 KB Output is correct
32 Correct 39 ms 9524 KB Output is correct
33 Correct 41 ms 9536 KB Output is correct
34 Correct 63 ms 11880 KB Output is correct
35 Correct 54 ms 11084 KB Output is correct
36 Correct 41 ms 10308 KB Output is correct
37 Correct 87 ms 12968 KB Output is correct
38 Correct 88 ms 12828 KB Output is correct
39 Correct 87 ms 12748 KB Output is correct
40 Correct 74 ms 12644 KB Output is correct
41 Correct 73 ms 12488 KB Output is correct
42 Correct 42 ms 9540 KB Output is correct
43 Correct 80 ms 12852 KB Output is correct
44 Correct 83 ms 12704 KB Output is correct
45 Correct 76 ms 12604 KB Output is correct
46 Correct 75 ms 12476 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 1 ms 324 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 0 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 1 ms 328 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 1 ms 328 KB Output is correct
66 Correct 0 ms 332 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 0 ms 204 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 1 ms 324 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 2 ms 584 KB Output is correct
75 Correct 2 ms 588 KB Output is correct
76 Correct 3 ms 592 KB Output is correct
77 Correct 2 ms 588 KB Output is correct
78 Correct 2 ms 588 KB Output is correct
79 Correct 2 ms 564 KB Output is correct
80 Correct 2 ms 548 KB Output is correct
81 Correct 3 ms 844 KB Output is correct
82 Correct 3 ms 716 KB Output is correct
83 Correct 3 ms 716 KB Output is correct
84 Correct 2 ms 588 KB Output is correct
85 Correct 3 ms 720 KB Output is correct
86 Correct 3 ms 716 KB Output is correct
87 Correct 3 ms 688 KB Output is correct
88 Correct 2 ms 588 KB Output is correct
89 Correct 2 ms 716 KB Output is correct
90 Correct 2 ms 716 KB Output is correct
91 Correct 3 ms 716 KB Output is correct
92 Correct 3 ms 588 KB Output is correct
93 Correct 2 ms 588 KB Output is correct
94 Correct 3 ms 588 KB Output is correct
95 Correct 2 ms 592 KB Output is correct
96 Correct 3 ms 588 KB Output is correct
97 Correct 3 ms 588 KB Output is correct
98 Correct 2 ms 588 KB Output is correct
99 Correct 2 ms 668 KB Output is correct
100 Correct 2 ms 588 KB Output is correct
101 Correct 3 ms 844 KB Output is correct
102 Correct 3 ms 844 KB Output is correct
103 Correct 3 ms 844 KB Output is correct
104 Correct 3 ms 844 KB Output is correct
105 Correct 3 ms 844 KB Output is correct
106 Correct 3 ms 844 KB Output is correct
107 Correct 3 ms 844 KB Output is correct
108 Correct 3 ms 844 KB Output is correct
109 Correct 4 ms 716 KB Output is correct
110 Correct 2 ms 588 KB Output is correct
111 Correct 55 ms 9588 KB Output is correct
112 Correct 49 ms 9532 KB Output is correct
113 Correct 50 ms 9608 KB Output is correct
114 Correct 55 ms 9624 KB Output is correct
115 Correct 46 ms 9580 KB Output is correct
116 Correct 44 ms 9540 KB Output is correct
117 Correct 51 ms 9616 KB Output is correct
118 Correct 157 ms 15932 KB Output is correct
119 Correct 148 ms 15268 KB Output is correct
120 Correct 104 ms 12740 KB Output is correct
121 Correct 46 ms 9528 KB Output is correct
122 Correct 114 ms 13508 KB Output is correct
123 Correct 109 ms 13248 KB Output is correct
124 Correct 125 ms 12780 KB Output is correct
125 Correct 46 ms 9616 KB Output is correct
126 Correct 74 ms 10396 KB Output is correct
127 Correct 71 ms 10404 KB Output is correct
128 Correct 65 ms 10256 KB Output is correct
129 Correct 51 ms 9520 KB Output is correct
130 Correct 62 ms 9692 KB Output is correct
131 Correct 55 ms 9676 KB Output is correct
132 Correct 54 ms 9668 KB Output is correct
133 Correct 43 ms 9564 KB Output is correct
134 Correct 58 ms 9640 KB Output is correct
135 Correct 58 ms 9628 KB Output is correct
136 Correct 52 ms 9584 KB Output is correct
137 Correct 44 ms 9616 KB Output is correct
138 Correct 48 ms 9504 KB Output is correct
139 Correct 48 ms 9588 KB Output is correct
140 Correct 61 ms 9508 KB Output is correct
141 Correct 50 ms 9540 KB Output is correct
142 Correct 105 ms 16416 KB Output is correct
143 Correct 105 ms 16448 KB Output is correct
144 Correct 116 ms 16384 KB Output is correct
145 Correct 143 ms 16392 KB Output is correct
146 Correct 106 ms 16200 KB Output is correct
147 Correct 104 ms 16012 KB Output is correct
148 Correct 115 ms 15920 KB Output is correct
149 Correct 120 ms 15820 KB Output is correct
150 Correct 94 ms 15684 KB Output is correct
151 Correct 92 ms 14980 KB Output is correct
152 Correct 37 ms 9508 KB Output is correct
153 Correct 104 ms 16324 KB Output is correct
154 Correct 107 ms 16184 KB Output is correct
155 Correct 113 ms 16072 KB Output is correct
156 Correct 99 ms 15940 KB Output is correct
157 Correct 98 ms 15900 KB Output is correct
158 Correct 107 ms 15732 KB Output is correct
159 Correct 107 ms 15004 KB Output is correct
160 Correct 32 ms 9532 KB Output is correct
161 Correct 111 ms 12964 KB Output is correct
162 Correct 140 ms 12880 KB Output is correct
163 Correct 98 ms 12740 KB Output is correct
164 Correct 105 ms 12620 KB Output is correct
165 Correct 89 ms 12364 KB Output is correct
166 Correct 39 ms 9500 KB Output is correct
167 Correct 86 ms 12852 KB Output is correct
168 Correct 77 ms 12664 KB Output is correct
169 Correct 82 ms 12748 KB Output is correct
170 Correct 102 ms 12408 KB Output is correct
171 Correct 72 ms 12944 KB Output is correct
172 Correct 79 ms 13000 KB Output is correct
173 Correct 125 ms 13144 KB Output is correct
174 Correct 108 ms 12952 KB Output is correct
175 Correct 111 ms 12908 KB Output is correct
176 Correct 93 ms 12404 KB Output is correct