oj.uz

답안 #893870

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
893870 2023-12-27T15:21:10 Z vjudge1 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 235 ms 50380 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(a) a.begin(), a.end()
#define ff first
#define ss second



int in(auto big, auto small){
	if(big.ff <= small.ff && big.ss >= small.ss) return 1;
	return 0;
}



auto split(auto big, auto small){
	vector<pair<int, int> > v;
	v.push_back({big.ff, small.ff});
	v.push_back({small.ss, big.ss});
	return v;
}


signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n, k; cin >> n >> k;
	vector<pair<int, int> > a(n);
	for(int i = 0;i < n; i++){
		cin >> a[i].ff >> a[i].ss;
	}
	vector<int> X;
	for(int i = 0;i < n; i++){
		X.push_back(a[i].ff);
		X.push_back(a[i].ss);
	}
	sort(all(X));
	X.erase(unique(all(X)), X.end());
	auto get = [&](int cor){
		return lower_bound(all(X), cor) - X.begin() + 1;
	};
	int sz = n * 2;
	vector< vector<int> > up(sz+2, vector<int>(20, sz+1));
	for(int i = 0;i < n; i++){
		a[i].ff = get(a[i].ff);
		a[i].ss = get(a[i].ss);
		up[a[i].ff][0] = min(up[a[i].ff][0], a[i].ss); 
	}
	int mn = sz+1;
	for(int i = sz; i >= 1; i--){
		mn = min(mn, up[i][0]);
		up[i][0] = mn;
	}
	for(int j = 1;j < 20; j++){
		for(int i = 1;i <= sz; i++){
			up[i][j] = up[up[i][j-1]][j-1];
		}
	}
	auto check=[&](int l, int r){
		int len = 0;
		for(int i = 19; i >= 0; i--){
			if(up[l][i] <= r){
				l = up[l][i];
				len+= (1<<i);
			}
		}
		return len;
	};
	
	int cnt = check(1, sz);
	if(cnt < k){
		cout << "-1";
		return 0;
	}
	
	vector<int> ans;
	set<pair<int, int> > range;
	range.insert({1, sz});
	for(int i = 0;i < n && (int)ans.size() < k; i++){
		auto it = range.upper_bound(make_pair(a[i].ff, INT_MAX));
		if(it == range.begin()) continue;
		it--;
		if(!in(*it, a[i])) continue;
		int cn = check(it->ff, it->ss);
		auto spt = split(*it, a[i]);
		int cn1 = check(spt[0].ff, spt[0].ss);
		int cn2 = check(spt[1].ff, spt[1].ss);
		
		if(cnt - cn + cn1 + cn2 + 1 < k){
			continue;
		}
		cnt = cnt - cn + cn1 + cn2 + 1;
		ans.push_back(i+1);
		range.erase(it);
		range.insert(spt[0]);
		range.insert(spt[1]);
	}

	for(auto x : ans) cout << x << '\n';
	
	
	
	
	
	
	
	return 0;
}

Compilation message

event2.cpp:10:8: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   10 | int in(auto big, auto small){
      |        ^~~~
event2.cpp:10:18: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   10 | int in(auto big, auto small){
      |                  ^~~~
event2.cpp:17:12: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   17 | auto split(auto big, auto small){
      |            ^~~~
event2.cpp:17:22: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   17 | auto split(auto big, auto small){
      |                      ^~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 160 ms 49804 KB Output is correct
5 Correct 166 ms 49352 KB Output is correct
6 Correct 155 ms 48920 KB Output is correct
7 Correct 153 ms 48304 KB Output is correct
8 Correct 174 ms 49612 KB Output is correct
9 Correct 183 ms 49356 KB Output is correct
10 Correct 160 ms 49100 KB Output is correct
11 Correct 150 ms 48192 KB Output is correct
12 Correct 155 ms 47076 KB Output is correct
13 Correct 131 ms 46752 KB Output is correct
14 Correct 144 ms 46664 KB Output is correct
15 Correct 130 ms 46068 KB Output is correct
16 Correct 114 ms 43736 KB Output is correct
17 Correct 123 ms 43468 KB Output is correct
18 Correct 120 ms 43508 KB Output is correct
19 Correct 104 ms 42708 KB Output is correct
20 Correct 103 ms 42724 KB Output is correct
21 Correct 106 ms 42728 KB Output is correct
22 Correct 99 ms 42716 KB Output is correct
23 Correct 99 ms 43212 KB Output is correct
24 Correct 98 ms 42648 KB Output is correct
25 Correct 99 ms 42720 KB Output is correct
26 Correct 105 ms 42648 KB Output is correct
27 Correct 102 ms 42728 KB Output is correct
28 Correct 87 ms 42696 KB Output is correct
29 Correct 93 ms 42616 KB Output is correct
30 Correct 109 ms 42700 KB Output is correct
31 Correct 106 ms 42696 KB Output is correct
32 Correct 94 ms 42696 KB Output is correct
33 Correct 106 ms 42724 KB Output is correct
34 Correct 119 ms 45272 KB Output is correct
35 Correct 109 ms 44580 KB Output is correct
36 Correct 103 ms 43464 KB Output is correct
37 Correct 136 ms 46364 KB Output is correct
38 Correct 138 ms 46280 KB Output is correct
39 Correct 124 ms 46028 KB Output is correct
40 Correct 128 ms 46024 KB Output is correct
41 Correct 120 ms 45932 KB Output is correct
42 Correct 97 ms 42584 KB Output is correct
43 Correct 135 ms 46284 KB Output is correct
44 Correct 132 ms 46052 KB Output is correct
45 Correct 134 ms 46024 KB Output is correct
46 Correct 131 ms 45768 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 2 ms 1624 KB Output is correct
29 Correct 3 ms 1624 KB Output is correct
30 Correct 2 ms 1628 KB Output is correct
31 Correct 2 ms 1628 KB Output is correct
32 Correct 2 ms 1628 KB Output is correct
33 Correct 2 ms 1668 KB Output is correct
34 Correct 2 ms 1628 KB Output is correct
35 Correct 4 ms 1868 KB Output is correct
36 Correct 4 ms 1880 KB Output is correct
37 Correct 3 ms 1884 KB Output is correct
38 Correct 2 ms 1628 KB Output is correct
39 Correct 4 ms 1880 KB Output is correct
40 Correct 5 ms 1884 KB Output is correct
41 Correct 4 ms 1884 KB Output is correct
42 Correct 2 ms 1628 KB Output is correct
43 Correct 4 ms 1628 KB Output is correct
44 Correct 3 ms 1628 KB Output is correct
45 Correct 3 ms 1624 KB Output is correct
46 Correct 3 ms 1884 KB Output is correct
47 Correct 3 ms 1628 KB Output is correct
48 Correct 3 ms 1628 KB Output is correct
49 Correct 2 ms 1628 KB Output is correct
50 Correct 2 ms 1624 KB Output is correct
51 Correct 3 ms 1624 KB Output is correct
52 Correct 2 ms 1628 KB Output is correct
53 Correct 2 ms 1628 KB Output is correct
54 Correct 2 ms 1628 KB Output is correct
55 Correct 3 ms 1884 KB Output is correct
56 Correct 3 ms 1884 KB Output is correct
57 Correct 4 ms 1884 KB Output is correct
58 Correct 3 ms 2136 KB Output is correct
59 Correct 3 ms 1884 KB Output is correct
60 Correct 3 ms 1884 KB Output is correct
61 Correct 3 ms 1884 KB Output is correct
62 Correct 3 ms 1884 KB Output is correct
63 Correct 3 ms 1884 KB Output is correct
64 Correct 2 ms 1628 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 160 ms 49804 KB Output is correct
5 Correct 166 ms 49352 KB Output is correct
6 Correct 155 ms 48920 KB Output is correct
7 Correct 153 ms 48304 KB Output is correct
8 Correct 174 ms 49612 KB Output is correct
9 Correct 183 ms 49356 KB Output is correct
10 Correct 160 ms 49100 KB Output is correct
11 Correct 150 ms 48192 KB Output is correct
12 Correct 155 ms 47076 KB Output is correct
13 Correct 131 ms 46752 KB Output is correct
14 Correct 144 ms 46664 KB Output is correct
15 Correct 130 ms 46068 KB Output is correct
16 Correct 114 ms 43736 KB Output is correct
17 Correct 123 ms 43468 KB Output is correct
18 Correct 120 ms 43508 KB Output is correct
19 Correct 104 ms 42708 KB Output is correct
20 Correct 103 ms 42724 KB Output is correct
21 Correct 106 ms 42728 KB Output is correct
22 Correct 99 ms 42716 KB Output is correct
23 Correct 99 ms 43212 KB Output is correct
24 Correct 98 ms 42648 KB Output is correct
25 Correct 99 ms 42720 KB Output is correct
26 Correct 105 ms 42648 KB Output is correct
27 Correct 102 ms 42728 KB Output is correct
28 Correct 87 ms 42696 KB Output is correct
29 Correct 93 ms 42616 KB Output is correct
30 Correct 109 ms 42700 KB Output is correct
31 Correct 106 ms 42696 KB Output is correct
32 Correct 94 ms 42696 KB Output is correct
33 Correct 106 ms 42724 KB Output is correct
34 Correct 119 ms 45272 KB Output is correct
35 Correct 109 ms 44580 KB Output is correct
36 Correct 103 ms 43464 KB Output is correct
37 Correct 136 ms 46364 KB Output is correct
38 Correct 138 ms 46280 KB Output is correct
39 Correct 124 ms 46028 KB Output is correct
40 Correct 128 ms 46024 KB Output is correct
41 Correct 120 ms 45932 KB Output is correct
42 Correct 97 ms 42584 KB Output is correct
43 Correct 135 ms 46284 KB Output is correct
44 Correct 132 ms 46052 KB Output is correct
45 Correct 134 ms 46024 KB Output is correct
46 Correct 131 ms 45768 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 348 KB Output is correct
74 Correct 2 ms 1624 KB Output is correct
75 Correct 3 ms 1624 KB Output is correct
76 Correct 2 ms 1628 KB Output is correct
77 Correct 2 ms 1628 KB Output is correct
78 Correct 2 ms 1628 KB Output is correct
79 Correct 2 ms 1668 KB Output is correct
80 Correct 2 ms 1628 KB Output is correct
81 Correct 4 ms 1868 KB Output is correct
82 Correct 4 ms 1880 KB Output is correct
83 Correct 3 ms 1884 KB Output is correct
84 Correct 2 ms 1628 KB Output is correct
85 Correct 4 ms 1880 KB Output is correct
86 Correct 5 ms 1884 KB Output is correct
87 Correct 4 ms 1884 KB Output is correct
88 Correct 2 ms 1628 KB Output is correct
89 Correct 4 ms 1628 KB Output is correct
90 Correct 3 ms 1628 KB Output is correct
91 Correct 3 ms 1624 KB Output is correct
92 Correct 3 ms 1884 KB Output is correct
93 Correct 3 ms 1628 KB Output is correct
94 Correct 3 ms 1628 KB Output is correct
95 Correct 2 ms 1628 KB Output is correct
96 Correct 2 ms 1624 KB Output is correct
97 Correct 3 ms 1624 KB Output is correct
98 Correct 2 ms 1628 KB Output is correct
99 Correct 2 ms 1628 KB Output is correct
100 Correct 2 ms 1628 KB Output is correct
101 Correct 3 ms 1884 KB Output is correct
102 Correct 3 ms 1884 KB Output is correct
103 Correct 4 ms 1884 KB Output is correct
104 Correct 3 ms 2136 KB Output is correct
105 Correct 3 ms 1884 KB Output is correct
106 Correct 3 ms 1884 KB Output is correct
107 Correct 3 ms 1884 KB Output is correct
108 Correct 3 ms 1884 KB Output is correct
109 Correct 3 ms 1884 KB Output is correct
110 Correct 2 ms 1628 KB Output is correct
111 Correct 123 ms 42724 KB Output is correct
112 Correct 124 ms 42696 KB Output is correct
113 Correct 123 ms 42724 KB Output is correct
114 Correct 120 ms 42680 KB Output is correct
115 Correct 121 ms 42720 KB Output is correct
116 Correct 116 ms 42700 KB Output is correct
117 Correct 126 ms 42700 KB Output is correct
118 Correct 235 ms 49860 KB Output is correct
119 Correct 209 ms 49096 KB Output is correct
120 Correct 172 ms 46020 KB Output is correct
121 Correct 120 ms 43148 KB Output is correct
122 Correct 192 ms 47072 KB Output is correct
123 Correct 181 ms 46540 KB Output is correct
124 Correct 173 ms 46280 KB Output is correct
125 Correct 116 ms 42532 KB Output is correct
126 Correct 147 ms 43464 KB Output is correct
127 Correct 170 ms 43464 KB Output is correct
128 Correct 141 ms 43392 KB Output is correct
129 Correct 121 ms 42724 KB Output is correct
130 Correct 136 ms 42700 KB Output is correct
131 Correct 137 ms 43068 KB Output is correct
132 Correct 128 ms 42636 KB Output is correct
133 Correct 122 ms 42724 KB Output is correct
134 Correct 130 ms 42700 KB Output is correct
135 Correct 130 ms 42712 KB Output is correct
136 Correct 125 ms 42728 KB Output is correct
137 Correct 121 ms 42708 KB Output is correct
138 Correct 123 ms 42700 KB Output is correct
139 Correct 128 ms 42956 KB Output is correct
140 Correct 121 ms 42700 KB Output is correct
141 Correct 125 ms 42700 KB Output is correct
142 Correct 152 ms 50120 KB Output is correct
143 Correct 149 ms 50380 KB Output is correct
144 Correct 156 ms 50164 KB Output is correct
145 Correct 146 ms 50164 KB Output is correct
146 Correct 150 ms 50160 KB Output is correct
147 Correct 142 ms 49976 KB Output is correct
148 Correct 141 ms 49612 KB Output is correct
149 Correct 142 ms 49636 KB Output is correct
150 Correct 147 ms 49508 KB Output is correct
151 Correct 140 ms 48588 KB Output is correct
152 Correct 88 ms 42700 KB Output is correct
153 Correct 145 ms 50148 KB Output is correct
154 Correct 144 ms 50124 KB Output is correct
155 Correct 144 ms 49868 KB Output is correct
156 Correct 145 ms 49868 KB Output is correct
157 Correct 145 ms 49640 KB Output is correct
158 Correct 146 ms 49476 KB Output is correct
159 Correct 137 ms 48612 KB Output is correct
160 Correct 85 ms 42700 KB Output is correct
161 Correct 185 ms 46304 KB Output is correct
162 Correct 175 ms 46284 KB Output is correct
163 Correct 162 ms 46044 KB Output is correct
164 Correct 172 ms 45980 KB Output is correct
165 Correct 159 ms 45772 KB Output is correct
166 Correct 96 ms 42700 KB Output is correct
167 Correct 131 ms 46284 KB Output is correct
168 Correct 130 ms 46540 KB Output is correct
169 Correct 128 ms 46048 KB Output is correct
170 Correct 127 ms 45796 KB Output is correct
171 Correct 126 ms 46536 KB Output is correct
172 Correct 126 ms 46536 KB Output is correct
173 Correct 184 ms 46304 KB Output is correct
174 Correct 171 ms 46304 KB Output is correct
175 Correct 173 ms 46484 KB Output is correct
176 Correct 166 ms 45552 KB Output is correct