oj.uz

Submission #893869

# Submission time Handle Problem Language Result Execution time Memory
893869 2023-12-27T15:20:42 Z iskhakkutbilim Event Hopping 2 (JOI21_event2) C++17
100 / 100
 224 ms 52260 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

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 150 ms 51660 KB Output is correct
5 Correct 147 ms 51912 KB Output is correct
6 Correct 154 ms 50988 KB Output is correct
7 Correct 138 ms 50120 KB Output is correct
8 Correct 152 ms 51852 KB Output is correct
9 Correct 147 ms 51404 KB Output is correct
10 Correct 146 ms 51052 KB Output is correct
11 Correct 134 ms 50360 KB Output is correct
12 Correct 147 ms 49024 KB Output is correct
13 Correct 149 ms 48752 KB Output is correct
14 Correct 127 ms 48588 KB Output is correct
15 Correct 130 ms 48072 KB Output is correct
16 Correct 110 ms 45768 KB Output is correct
17 Correct 105 ms 45424 KB Output is correct
18 Correct 105 ms 45512 KB Output is correct
19 Correct 115 ms 44736 KB Output is correct
20 Correct 91 ms 44656 KB Output is correct
21 Correct 91 ms 44748 KB Output is correct
22 Correct 96 ms 44596 KB Output is correct
23 Correct 96 ms 44660 KB Output is correct
24 Correct 95 ms 44488 KB Output is correct
25 Correct 94 ms 44488 KB Output is correct
26 Correct 98 ms 44664 KB Output is correct
27 Correct 93 ms 44664 KB Output is correct
28 Correct 85 ms 44492 KB Output is correct
29 Correct 94 ms 44828 KB Output is correct
30 Correct 97 ms 44500 KB Output is correct
31 Correct 93 ms 44488 KB Output is correct
32 Correct 95 ms 44492 KB Output is correct
33 Correct 96 ms 44444 KB Output is correct
34 Correct 129 ms 47304 KB Output is correct
35 Correct 107 ms 46280 KB Output is correct
36 Correct 98 ms 45284 KB Output is correct
37 Correct 141 ms 48520 KB Output is correct
38 Correct 125 ms 48488 KB Output is correct
39 Correct 120 ms 48084 KB Output is correct
40 Correct 125 ms 47908 KB Output is correct
41 Correct 123 ms 47876 KB Output is correct
42 Correct 95 ms 44492 KB Output is correct
43 Correct 151 ms 48316 KB Output is correct
44 Correct 132 ms 48168 KB Output is correct
45 Correct 133 ms 47816 KB Output is correct
46 Correct 132 ms 47816 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 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 1 ms 348 KB Output is correct
8 Correct 0 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 348 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 552 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 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 0 ms 344 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

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 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 1 ms 348 KB Output is correct
8 Correct 0 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 348 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 552 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 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 3 ms 1628 KB Output is correct
29 Correct 2 ms 1628 KB Output is correct
30 Correct 2 ms 1628 KB Output is correct
31 Correct 3 ms 1628 KB Output is correct
32 Correct 3 ms 1628 KB Output is correct
33 Correct 3 ms 1628 KB Output is correct
34 Correct 3 ms 1584 KB Output is correct
35 Correct 4 ms 1884 KB Output is correct
36 Correct 4 ms 1844 KB Output is correct
37 Correct 3 ms 1880 KB Output is correct
38 Correct 3 ms 1628 KB Output is correct
39 Correct 4 ms 1884 KB Output is correct
40 Correct 4 ms 1884 KB Output is correct
41 Correct 4 ms 1860 KB Output is correct
42 Correct 3 ms 1628 KB Output is correct
43 Correct 3 ms 1628 KB Output is correct
44 Correct 3 ms 1752 KB Output is correct
45 Correct 3 ms 1628 KB Output is correct
46 Correct 3 ms 1628 KB Output is correct
47 Correct 3 ms 1628 KB Output is correct
48 Correct 3 ms 1628 KB Output is correct
49 Correct 3 ms 1628 KB Output is correct
50 Correct 2 ms 1584 KB Output is correct
51 Correct 3 ms 1628 KB Output is correct
52 Correct 3 ms 1808 KB Output is correct
53 Correct 4 ms 1624 KB Output is correct
54 Correct 3 ms 1628 KB Output is correct
55 Correct 4 ms 1884 KB Output is correct
56 Correct 3 ms 1884 KB Output is correct
57 Correct 3 ms 2004 KB Output is correct
58 Correct 3 ms 1884 KB Output is correct
59 Correct 5 ms 1864 KB Output is correct
60 Correct 3 ms 1884 KB Output is correct
61 Correct 3 ms 1848 KB Output is correct
62 Correct 3 ms 1884 KB Output is correct
63 Correct 3 ms 1840 KB Output is correct
64 Correct 2 ms 1624 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 150 ms 51660 KB Output is correct
5 Correct 147 ms 51912 KB Output is correct
6 Correct 154 ms 50988 KB Output is correct
7 Correct 138 ms 50120 KB Output is correct
8 Correct 152 ms 51852 KB Output is correct
9 Correct 147 ms 51404 KB Output is correct
10 Correct 146 ms 51052 KB Output is correct
11 Correct 134 ms 50360 KB Output is correct
12 Correct 147 ms 49024 KB Output is correct
13 Correct 149 ms 48752 KB Output is correct
14 Correct 127 ms 48588 KB Output is correct
15 Correct 130 ms 48072 KB Output is correct
16 Correct 110 ms 45768 KB Output is correct
17 Correct 105 ms 45424 KB Output is correct
18 Correct 105 ms 45512 KB Output is correct
19 Correct 115 ms 44736 KB Output is correct
20 Correct 91 ms 44656 KB Output is correct
21 Correct 91 ms 44748 KB Output is correct
22 Correct 96 ms 44596 KB Output is correct
23 Correct 96 ms 44660 KB Output is correct
24 Correct 95 ms 44488 KB Output is correct
25 Correct 94 ms 44488 KB Output is correct
26 Correct 98 ms 44664 KB Output is correct
27 Correct 93 ms 44664 KB Output is correct
28 Correct 85 ms 44492 KB Output is correct
29 Correct 94 ms 44828 KB Output is correct
30 Correct 97 ms 44500 KB Output is correct
31 Correct 93 ms 44488 KB Output is correct
32 Correct 95 ms 44492 KB Output is correct
33 Correct 96 ms 44444 KB Output is correct
34 Correct 129 ms 47304 KB Output is correct
35 Correct 107 ms 46280 KB Output is correct
36 Correct 98 ms 45284 KB Output is correct
37 Correct 141 ms 48520 KB Output is correct
38 Correct 125 ms 48488 KB Output is correct
39 Correct 120 ms 48084 KB Output is correct
40 Correct 125 ms 47908 KB Output is correct
41 Correct 123 ms 47876 KB Output is correct
42 Correct 95 ms 44492 KB Output is correct
43 Correct 151 ms 48316 KB Output is correct
44 Correct 132 ms 48168 KB Output is correct
45 Correct 133 ms 47816 KB Output is correct
46 Correct 132 ms 47816 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 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 1 ms 348 KB Output is correct
54 Correct 0 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 348 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 552 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 344 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 348 KB Output is correct
74 Correct 3 ms 1628 KB Output is correct
75 Correct 2 ms 1628 KB Output is correct
76 Correct 2 ms 1628 KB Output is correct
77 Correct 3 ms 1628 KB Output is correct
78 Correct 3 ms 1628 KB Output is correct
79 Correct 3 ms 1628 KB Output is correct
80 Correct 3 ms 1584 KB Output is correct
81 Correct 4 ms 1884 KB Output is correct
82 Correct 4 ms 1844 KB Output is correct
83 Correct 3 ms 1880 KB Output is correct
84 Correct 3 ms 1628 KB Output is correct
85 Correct 4 ms 1884 KB Output is correct
86 Correct 4 ms 1884 KB Output is correct
87 Correct 4 ms 1860 KB Output is correct
88 Correct 3 ms 1628 KB Output is correct
89 Correct 3 ms 1628 KB Output is correct
90 Correct 3 ms 1752 KB Output is correct
91 Correct 3 ms 1628 KB Output is correct
92 Correct 3 ms 1628 KB Output is correct
93 Correct 3 ms 1628 KB Output is correct
94 Correct 3 ms 1628 KB Output is correct
95 Correct 3 ms 1628 KB Output is correct
96 Correct 2 ms 1584 KB Output is correct
97 Correct 3 ms 1628 KB Output is correct
98 Correct 3 ms 1808 KB Output is correct
99 Correct 4 ms 1624 KB Output is correct
100 Correct 3 ms 1628 KB Output is correct
101 Correct 4 ms 1884 KB Output is correct
102 Correct 3 ms 1884 KB Output is correct
103 Correct 3 ms 2004 KB Output is correct
104 Correct 3 ms 1884 KB Output is correct
105 Correct 5 ms 1864 KB Output is correct
106 Correct 3 ms 1884 KB Output is correct
107 Correct 3 ms 1848 KB Output is correct
108 Correct 3 ms 1884 KB Output is correct
109 Correct 3 ms 1840 KB Output is correct
110 Correct 2 ms 1624 KB Output is correct
111 Correct 132 ms 44612 KB Output is correct
112 Correct 122 ms 44512 KB Output is correct
113 Correct 117 ms 44420 KB Output is correct
114 Correct 122 ms 44368 KB Output is correct
115 Correct 118 ms 44492 KB Output is correct
116 Correct 114 ms 44492 KB Output is correct
117 Correct 116 ms 44488 KB Output is correct
118 Correct 224 ms 52260 KB Output is correct
119 Correct 204 ms 50768 KB Output is correct
120 Correct 171 ms 47816 KB Output is correct
121 Correct 112 ms 44476 KB Output is correct
122 Correct 184 ms 48844 KB Output is correct
123 Correct 171 ms 48332 KB Output is correct
124 Correct 164 ms 48012 KB Output is correct
125 Correct 109 ms 44420 KB Output is correct
126 Correct 144 ms 45292 KB Output is correct
127 Correct 143 ms 45180 KB Output is correct
128 Correct 151 ms 45512 KB Output is correct
129 Correct 115 ms 44452 KB Output is correct
130 Correct 129 ms 44440 KB Output is correct
131 Correct 127 ms 44404 KB Output is correct
132 Correct 127 ms 44684 KB Output is correct
133 Correct 115 ms 44432 KB Output is correct
134 Correct 124 ms 44516 KB Output is correct
135 Correct 126 ms 44512 KB Output is correct
136 Correct 122 ms 44748 KB Output is correct
137 Correct 114 ms 44476 KB Output is correct
138 Correct 120 ms 44488 KB Output is correct
139 Correct 120 ms 44372 KB Output is correct
140 Correct 120 ms 44648 KB Output is correct
141 Correct 117 ms 44488 KB Output is correct
142 Correct 142 ms 51944 KB Output is correct
143 Correct 145 ms 52140 KB Output is correct
144 Correct 141 ms 51956 KB Output is correct
145 Correct 155 ms 51956 KB Output is correct
146 Correct 140 ms 51916 KB Output is correct
147 Correct 168 ms 51784 KB Output is correct
148 Correct 149 ms 51488 KB Output is correct
149 Correct 141 ms 51424 KB Output is correct
150 Correct 142 ms 51172 KB Output is correct
151 Correct 137 ms 50400 KB Output is correct
152 Correct 106 ms 44488 KB Output is correct
153 Correct 157 ms 51912 KB Output is correct
154 Correct 149 ms 51740 KB Output is correct
155 Correct 147 ms 51680 KB Output is correct
156 Correct 143 ms 51504 KB Output is correct
157 Correct 152 ms 51404 KB Output is correct
158 Correct 145 ms 51128 KB Output is correct
159 Correct 151 ms 50804 KB Output is correct
160 Correct 107 ms 44376 KB Output is correct
161 Correct 200 ms 48256 KB Output is correct
162 Correct 182 ms 48044 KB Output is correct
163 Correct 186 ms 47836 KB Output is correct
164 Correct 174 ms 47840 KB Output is correct
165 Correct 176 ms 47568 KB Output is correct
166 Correct 94 ms 44372 KB Output is correct
167 Correct 139 ms 48140 KB Output is correct
168 Correct 141 ms 47824 KB Output is correct
169 Correct 140 ms 47844 KB Output is correct
170 Correct 138 ms 47588 KB Output is correct
171 Correct 142 ms 47800 KB Output is correct
172 Correct 128 ms 48280 KB Output is correct
173 Correct 191 ms 48328 KB Output is correct
174 Correct 209 ms 48816 KB Output is correct
175 Correct 183 ms 48104 KB Output is correct
176 Correct 194 ms 47328 KB Output is correct