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답안 #528895

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
528895 2022-02-21T17:29:50 Z dutch Event Hopping 2 (JOI21_event2) C++17
100 / 100
 149 ms 16076 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int Z = 1e5+2, B = 17, INF = 2e9;
 
int N, K, L[Z], R[Z];
 
int p[Z][B];
 
set<array<int, 3>> s;
 
int solve(int i, int r) {
	int j = i, res = 1;
 
	for(int k = B; k--; )
		if(p[j][k] <= N && R[p[j][k]] <= r)
			j = p[j][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 fR = s.lower_bound({R[i] + 1});
		auto fL = prev(fR);
 
		if(R[(*fL)[1]] >= L[i]) continue;
 
		if(sum - (*fL)[2] + solve((*fL)[1], L[i]-1) + solve(i, (*fR)[0]-1) < K) continue;
		--req;
 
		array<int, 3> newL = *fL;
		newL[2] = solve((*fL)[1], L[i] - 1);
 
		int canDo = solve(i, (*fR)[0]-1);
 
		sum += newL[2] + canDo - (*fL)[2];
 
		s.erase(fL);
		s.insert(newL);
		s.insert({L[i], i, canDo});
 
		cout << i << '\n';
	}
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 107 ms 15584 KB Output is correct
5 Correct 106 ms 15300 KB Output is correct
6 Correct 111 ms 14948 KB Output is correct
7 Correct 97 ms 14344 KB Output is correct
8 Correct 108 ms 15640 KB Output is correct
9 Correct 109 ms 15232 KB Output is correct
10 Correct 103 ms 14984 KB Output is correct
11 Correct 95 ms 14328 KB Output is correct
12 Correct 96 ms 13236 KB Output is correct
13 Correct 80 ms 12928 KB Output is correct
14 Correct 79 ms 12856 KB Output is correct
15 Correct 75 ms 12356 KB Output is correct
16 Correct 51 ms 10164 KB Output is correct
17 Correct 49 ms 10024 KB Output is correct
18 Correct 50 ms 9916 KB Output is correct
19 Correct 47 ms 9300 KB Output is correct
20 Correct 39 ms 9312 KB Output is correct
21 Correct 38 ms 9308 KB Output is correct
22 Correct 39 ms 9232 KB Output is correct
23 Correct 39 ms 9204 KB Output is correct
24 Correct 39 ms 9188 KB Output is correct
25 Correct 40 ms 9288 KB Output is correct
26 Correct 40 ms 9172 KB Output is correct
27 Correct 42 ms 9280 KB Output is correct
28 Correct 31 ms 9168 KB Output is correct
29 Correct 42 ms 9240 KB Output is correct
30 Correct 33 ms 9288 KB Output is correct
31 Correct 34 ms 9284 KB Output is correct
32 Correct 36 ms 9192 KB Output is correct
33 Correct 38 ms 9192 KB Output is correct
34 Correct 86 ms 11564 KB Output is correct
35 Correct 54 ms 10868 KB Output is correct
36 Correct 49 ms 10096 KB Output is correct
37 Correct 77 ms 12696 KB Output is correct
38 Correct 76 ms 12516 KB Output is correct
39 Correct 77 ms 12356 KB Output is correct
40 Correct 75 ms 12244 KB Output is correct
41 Correct 75 ms 12276 KB Output is correct
42 Correct 34 ms 9284 KB Output is correct
43 Correct 80 ms 12520 KB Output is correct
44 Correct 91 ms 12372 KB Output is correct
45 Correct 82 ms 12532 KB Output is correct
46 Correct 72 ms 12088 KB Output is correct

Subtask #2
1.0 / 1.0

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

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 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 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 3 ms 588 KB Output is correct
29 Correct 2 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 2 ms 588 KB Output is correct
33 Correct 1 ms 588 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 4 ms 716 KB Output is correct
36 Correct 4 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 716 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 3 ms 716 KB Output is correct
42 Correct 1 ms 532 KB Output is correct
43 Correct 2 ms 588 KB Output is correct
44 Correct 3 ms 588 KB Output is correct
45 Correct 2 ms 640 KB Output is correct
46 Correct 2 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 588 KB Output is correct
50 Correct 1 ms 588 KB Output is correct
51 Correct 2 ms 588 KB Output is correct
52 Correct 2 ms 528 KB Output is correct
53 Correct 2 ms 588 KB Output is correct
54 Correct 2 ms 588 KB Output is correct
55 Correct 3 ms 716 KB Output is correct
56 Correct 3 ms 716 KB Output is correct
57 Correct 3 ms 716 KB Output is correct
58 Correct 4 ms 716 KB Output is correct
59 Correct 3 ms 716 KB Output is correct
60 Correct 3 ms 716 KB Output is correct
61 Correct 3 ms 716 KB Output is correct
62 Correct 3 ms 716 KB Output is correct
63 Correct 3 ms 716 KB Output is correct
64 Correct 1 ms 588 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 107 ms 15584 KB Output is correct
5 Correct 106 ms 15300 KB Output is correct
6 Correct 111 ms 14948 KB Output is correct
7 Correct 97 ms 14344 KB Output is correct
8 Correct 108 ms 15640 KB Output is correct
9 Correct 109 ms 15232 KB Output is correct
10 Correct 103 ms 14984 KB Output is correct
11 Correct 95 ms 14328 KB Output is correct
12 Correct 96 ms 13236 KB Output is correct
13 Correct 80 ms 12928 KB Output is correct
14 Correct 79 ms 12856 KB Output is correct
15 Correct 75 ms 12356 KB Output is correct
16 Correct 51 ms 10164 KB Output is correct
17 Correct 49 ms 10024 KB Output is correct
18 Correct 50 ms 9916 KB Output is correct
19 Correct 47 ms 9300 KB Output is correct
20 Correct 39 ms 9312 KB Output is correct
21 Correct 38 ms 9308 KB Output is correct
22 Correct 39 ms 9232 KB Output is correct
23 Correct 39 ms 9204 KB Output is correct
24 Correct 39 ms 9188 KB Output is correct
25 Correct 40 ms 9288 KB Output is correct
26 Correct 40 ms 9172 KB Output is correct
27 Correct 42 ms 9280 KB Output is correct
28 Correct 31 ms 9168 KB Output is correct
29 Correct 42 ms 9240 KB Output is correct
30 Correct 33 ms 9288 KB Output is correct
31 Correct 34 ms 9284 KB Output is correct
32 Correct 36 ms 9192 KB Output is correct
33 Correct 38 ms 9192 KB Output is correct
34 Correct 86 ms 11564 KB Output is correct
35 Correct 54 ms 10868 KB Output is correct
36 Correct 49 ms 10096 KB Output is correct
37 Correct 77 ms 12696 KB Output is correct
38 Correct 76 ms 12516 KB Output is correct
39 Correct 77 ms 12356 KB Output is correct
40 Correct 75 ms 12244 KB Output is correct
41 Correct 75 ms 12276 KB Output is correct
42 Correct 34 ms 9284 KB Output is correct
43 Correct 80 ms 12520 KB Output is correct
44 Correct 91 ms 12372 KB Output is correct
45 Correct 82 ms 12532 KB Output is correct
46 Correct 72 ms 12088 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 0 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 0 ms 204 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 0 ms 204 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 0 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 0 ms 204 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 0 ms 204 KB Output is correct
67 Correct 0 ms 204 KB Output is correct
68 Correct 0 ms 204 KB Output is correct
69 Correct 0 ms 204 KB Output is correct
70 Correct 0 ms 332 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 1 ms 204 KB Output is correct
74 Correct 3 ms 588 KB Output is correct
75 Correct 2 ms 588 KB Output is correct
76 Correct 2 ms 588 KB Output is correct
77 Correct 2 ms 588 KB Output is correct
78 Correct 2 ms 588 KB Output is correct
79 Correct 1 ms 588 KB Output is correct
80 Correct 2 ms 588 KB Output is correct
81 Correct 4 ms 716 KB Output is correct
82 Correct 4 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 716 KB Output is correct
86 Correct 3 ms 716 KB Output is correct
87 Correct 3 ms 716 KB Output is correct
88 Correct 1 ms 532 KB Output is correct
89 Correct 2 ms 588 KB Output is correct
90 Correct 3 ms 588 KB Output is correct
91 Correct 2 ms 640 KB Output is correct
92 Correct 2 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 588 KB Output is correct
96 Correct 1 ms 588 KB Output is correct
97 Correct 2 ms 588 KB Output is correct
98 Correct 2 ms 528 KB Output is correct
99 Correct 2 ms 588 KB Output is correct
100 Correct 2 ms 588 KB Output is correct
101 Correct 3 ms 716 KB Output is correct
102 Correct 3 ms 716 KB Output is correct
103 Correct 3 ms 716 KB Output is correct
104 Correct 4 ms 716 KB Output is correct
105 Correct 3 ms 716 KB Output is correct
106 Correct 3 ms 716 KB Output is correct
107 Correct 3 ms 716 KB Output is correct
108 Correct 3 ms 716 KB Output is correct
109 Correct 3 ms 716 KB Output is correct
110 Correct 1 ms 588 KB Output is correct
111 Correct 51 ms 9300 KB Output is correct
112 Correct 56 ms 9256 KB Output is correct
113 Correct 50 ms 9304 KB Output is correct
114 Correct 52 ms 9284 KB Output is correct
115 Correct 47 ms 9176 KB Output is correct
116 Correct 48 ms 9184 KB Output is correct
117 Correct 44 ms 9172 KB Output is correct
118 Correct 149 ms 15672 KB Output is correct
119 Correct 142 ms 14936 KB Output is correct
120 Correct 101 ms 12356 KB Output is correct
121 Correct 45 ms 9284 KB Output is correct
122 Correct 114 ms 13152 KB Output is correct
123 Correct 104 ms 12744 KB Output is correct
124 Correct 96 ms 12368 KB Output is correct
125 Correct 47 ms 9176 KB Output is correct
126 Correct 78 ms 10268 KB Output is correct
127 Correct 67 ms 10072 KB Output is correct
128 Correct 65 ms 9944 KB Output is correct
129 Correct 44 ms 9244 KB Output is correct
130 Correct 54 ms 9300 KB Output is correct
131 Correct 53 ms 9284 KB Output is correct
132 Correct 54 ms 9292 KB Output is correct
133 Correct 43 ms 9212 KB Output is correct
134 Correct 52 ms 9296 KB Output is correct
135 Correct 50 ms 9300 KB Output is correct
136 Correct 49 ms 9184 KB Output is correct
137 Correct 44 ms 9244 KB Output is correct
138 Correct 47 ms 9176 KB Output is correct
139 Correct 47 ms 9292 KB Output is correct
140 Correct 44 ms 9284 KB Output is correct
141 Correct 45 ms 9176 KB Output is correct
142 Correct 114 ms 16076 KB Output is correct
143 Correct 115 ms 16064 KB Output is correct
144 Correct 112 ms 16068 KB Output is correct
145 Correct 111 ms 15996 KB Output is correct
146 Correct 106 ms 15832 KB Output is correct
147 Correct 131 ms 15696 KB Output is correct
148 Correct 104 ms 15584 KB Output is correct
149 Correct 107 ms 15428 KB Output is correct
150 Correct 106 ms 15300 KB Output is correct
151 Correct 91 ms 14660 KB Output is correct
152 Correct 31 ms 9248 KB Output is correct
153 Correct 113 ms 16068 KB Output is correct
154 Correct 112 ms 15912 KB Output is correct
155 Correct 115 ms 15844 KB Output is correct
156 Correct 110 ms 15672 KB Output is correct
157 Correct 107 ms 15532 KB Output is correct
158 Correct 108 ms 15392 KB Output is correct
159 Correct 98 ms 14656 KB Output is correct
160 Correct 36 ms 9292 KB Output is correct
161 Correct 106 ms 12604 KB Output is correct
162 Correct 106 ms 12484 KB Output is correct
163 Correct 94 ms 12436 KB Output is correct
164 Correct 97 ms 12240 KB Output is correct
165 Correct 106 ms 12244 KB Output is correct
166 Correct 38 ms 9284 KB Output is correct
167 Correct 83 ms 12488 KB Output is correct
168 Correct 80 ms 12388 KB Output is correct
169 Correct 77 ms 12236 KB Output is correct
170 Correct 80 ms 12120 KB Output is correct
171 Correct 83 ms 12624 KB Output is correct
172 Correct 76 ms 12672 KB Output is correct
173 Correct 114 ms 12724 KB Output is correct
174 Correct 111 ms 12632 KB Output is correct
175 Correct 107 ms 12536 KB Output is correct
176 Correct 103 ms 12100 KB Output is correct