oj.uz

Submission #519940

# Submission time Handle Problem Language Result Execution time Memory
519940 2022-01-27T21:31:20 Z CaroLinda Event Hopping 2 (JOI21_event2) C++14
100 / 100
 182 ms 24796 KB 
#include <bits/stdc++.h>
 
#define mkt make_tuple
#define all(x) x.begin(),x.end()
#define sz(x) (int)(x.size())
#define ll long long
#define lp(i,a,b) for(int i = a ; i < b ; i++ )
#define pii pair<int,int>
#define mk make_pair
#define ff first
#define ss second
#define tiii tuple<int,int,int>
#define pb push_back

const int MAX = 2e5+10 ;
const int LOG  = 20 ;

using namespace std ;

int N , K ;
int L[MAX], R[MAX] ;
int dp[LOG][MAX] ;

int qry(int ini, int fim ) {
	int ans = 0 ;
	for(int i=LOG-1 ; i>= 0 ; i-- ){
		if( dp[i][ini] <= fim ){
			ans += (1<<i) ;
			ini = dp[i][ini] ;
		}
	}
	return ans ;
}

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

	cin >> N  >> K ;

	vector<int> p ;

	for(int i = 1 ; i <= N ; i++ ) {
		cin >> L[i] >> R[i] ;
		p.pb(L[i] ) ;
		p.pb(R[i] ) ;
	}

	sort(all(p) ) ;
	p.erase(unique(all(p) )  , p.end() ) ;

	for(int i = 0 ; i < LOG ; i++ )
		for(int j = 0 ; j < sz(p) ; j++ ) dp[i][j] = 2*N + 10 ;

	for(int i = 1 ; i <= N ; i++ ){
		L[i] = lower_bound(all(p) , L[i] ) - p.begin() ;
		R[i] = lower_bound(all(p) , R[i] ) - p.begin() ;
		dp[0][L[i]]=min(dp[0][L[i]], R[i] ) ;
	}

	for(int i = sz(p)-2 ; i >= 0 ; i-- ) dp[0][i] = min( dp[0][i+1], dp[0][i] ) ;

	for(int i = 1 ; i < LOG ; i++ )
		for(int j = 0;  dp[i-1][j] < sz(p) ; j++ )
			dp[i][j]=dp[i-1][dp[i-1][j]];


	vector<int> ans ;
	set<pair<int,int> > s ;
	s.insert(mk(0,sz(p)-1) ) ;

	int qtd = qry(0,sz(p)-1) ;

	if(qtd < K ) {
		cout << "-1\n" ;
		return 0 ;
	}

	for(int i = 1 ; i <= N && sz(ans) < K ; i++ ) {
		auto it = s.upper_bound(mk(L[i] +1, -1 )) ;
		if(it == s.begin() ) continue ;
		it-- ;
		int l = it->first, r = it->second ;
		if(r < R[i] ) continue ;

		int newQtd = qtd-qry(l,r)+1 ;

		if( l <= L[i] ) newQtd += qry(l,L[i] ) ;
		if( R[i] <= r ) newQtd += qry(R[i], r ) ;

		if(newQtd < K ) continue ;

		qtd = newQtd ;

		s.erase(it) ;
		s.insert( mk(l,L[i] ) ) ;
		s.insert(mk(R[i], r) ) ;

		ans.pb(i) ;
	}

	for(auto e : ans ) cout << e <<"\n" ;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 111 ms 24728 KB Output is correct
5 Correct 107 ms 24412 KB Output is correct
6 Correct 111 ms 24200 KB Output is correct
7 Correct 102 ms 23616 KB Output is correct
8 Correct 106 ms 24692 KB Output is correct
9 Correct 108 ms 24596 KB Output is correct
10 Correct 100 ms 24136 KB Output is correct
11 Correct 94 ms 23592 KB Output is correct
12 Correct 92 ms 22672 KB Output is correct
13 Correct 83 ms 22464 KB Output is correct
14 Correct 83 ms 22384 KB Output is correct
15 Correct 105 ms 22080 KB Output is correct
16 Correct 61 ms 20204 KB Output is correct
17 Correct 58 ms 20048 KB Output is correct
18 Correct 61 ms 20020 KB Output is correct
19 Correct 53 ms 19516 KB Output is correct
20 Correct 50 ms 19560 KB Output is correct
21 Correct 51 ms 19520 KB Output is correct
22 Correct 54 ms 19504 KB Output is correct
23 Correct 54 ms 19584 KB Output is correct
24 Correct 51 ms 19560 KB Output is correct
25 Correct 54 ms 19664 KB Output is correct
26 Correct 55 ms 19520 KB Output is correct
27 Correct 58 ms 19508 KB Output is correct
28 Correct 44 ms 19580 KB Output is correct
29 Correct 43 ms 19648 KB Output is correct
30 Correct 47 ms 19568 KB Output is correct
31 Correct 47 ms 19576 KB Output is correct
32 Correct 52 ms 19568 KB Output is correct
33 Correct 52 ms 19508 KB Output is correct
34 Correct 66 ms 21400 KB Output is correct
35 Correct 59 ms 20804 KB Output is correct
36 Correct 61 ms 20020 KB Output is correct
37 Correct 79 ms 22220 KB Output is correct
38 Correct 75 ms 22080 KB Output is correct
39 Correct 77 ms 22008 KB Output is correct
40 Correct 88 ms 21896 KB Output is correct
41 Correct 80 ms 21820 KB Output is correct
42 Correct 53 ms 19500 KB Output is correct
43 Correct 99 ms 22272 KB Output is correct
44 Correct 100 ms 22004 KB Output is correct
45 Correct 88 ms 21892 KB Output is correct
46 Correct 90 ms 21752 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 324 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 316 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 324 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 316 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 2 ms 972 KB Output is correct
29 Correct 2 ms 972 KB Output is correct
30 Correct 3 ms 1100 KB Output is correct
31 Correct 3 ms 972 KB Output is correct
32 Correct 2 ms 972 KB Output is correct
33 Correct 2 ms 972 KB Output is correct
34 Correct 2 ms 1044 KB Output is correct
35 Correct 4 ms 1152 KB Output is correct
36 Correct 4 ms 1164 KB Output is correct
37 Correct 4 ms 1100 KB Output is correct
38 Correct 2 ms 972 KB Output is correct
39 Correct 5 ms 1100 KB Output is correct
40 Correct 4 ms 1100 KB Output is correct
41 Correct 4 ms 1100 KB Output is correct
42 Correct 2 ms 972 KB Output is correct
43 Correct 3 ms 972 KB Output is correct
44 Correct 3 ms 972 KB Output is correct
45 Correct 3 ms 972 KB Output is correct
46 Correct 2 ms 972 KB Output is correct
47 Correct 2 ms 972 KB Output is correct
48 Correct 2 ms 972 KB Output is correct
49 Correct 2 ms 972 KB Output is correct
50 Correct 2 ms 972 KB Output is correct
51 Correct 2 ms 972 KB Output is correct
52 Correct 2 ms 972 KB Output is correct
53 Correct 2 ms 972 KB Output is correct
54 Correct 2 ms 972 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 848 KB Output is correct
63 Correct 3 ms 844 KB Output is correct
64 Correct 2 ms 716 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 111 ms 24728 KB Output is correct
5 Correct 107 ms 24412 KB Output is correct
6 Correct 111 ms 24200 KB Output is correct
7 Correct 102 ms 23616 KB Output is correct
8 Correct 106 ms 24692 KB Output is correct
9 Correct 108 ms 24596 KB Output is correct
10 Correct 100 ms 24136 KB Output is correct
11 Correct 94 ms 23592 KB Output is correct
12 Correct 92 ms 22672 KB Output is correct
13 Correct 83 ms 22464 KB Output is correct
14 Correct 83 ms 22384 KB Output is correct
15 Correct 105 ms 22080 KB Output is correct
16 Correct 61 ms 20204 KB Output is correct
17 Correct 58 ms 20048 KB Output is correct
18 Correct 61 ms 20020 KB Output is correct
19 Correct 53 ms 19516 KB Output is correct
20 Correct 50 ms 19560 KB Output is correct
21 Correct 51 ms 19520 KB Output is correct
22 Correct 54 ms 19504 KB Output is correct
23 Correct 54 ms 19584 KB Output is correct
24 Correct 51 ms 19560 KB Output is correct
25 Correct 54 ms 19664 KB Output is correct
26 Correct 55 ms 19520 KB Output is correct
27 Correct 58 ms 19508 KB Output is correct
28 Correct 44 ms 19580 KB Output is correct
29 Correct 43 ms 19648 KB Output is correct
30 Correct 47 ms 19568 KB Output is correct
31 Correct 47 ms 19576 KB Output is correct
32 Correct 52 ms 19568 KB Output is correct
33 Correct 52 ms 19508 KB Output is correct
34 Correct 66 ms 21400 KB Output is correct
35 Correct 59 ms 20804 KB Output is correct
36 Correct 61 ms 20020 KB Output is correct
37 Correct 79 ms 22220 KB Output is correct
38 Correct 75 ms 22080 KB Output is correct
39 Correct 77 ms 22008 KB Output is correct
40 Correct 88 ms 21896 KB Output is correct
41 Correct 80 ms 21820 KB Output is correct
42 Correct 53 ms 19500 KB Output is correct
43 Correct 99 ms 22272 KB Output is correct
44 Correct 100 ms 22004 KB Output is correct
45 Correct 88 ms 21892 KB Output is correct
46 Correct 90 ms 21752 KB Output is correct
47 Correct 1 ms 320 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 0 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 0 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 316 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 1 ms 320 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 1 ms 320 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 0 ms 332 KB Output is correct
67 Correct 0 ms 324 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 0 ms 316 KB Output is correct
71 Correct 0 ms 332 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 0 ms 332 KB Output is correct
74 Correct 2 ms 972 KB Output is correct
75 Correct 2 ms 972 KB Output is correct
76 Correct 3 ms 1100 KB Output is correct
77 Correct 3 ms 972 KB Output is correct
78 Correct 2 ms 972 KB Output is correct
79 Correct 2 ms 972 KB Output is correct
80 Correct 2 ms 1044 KB Output is correct
81 Correct 4 ms 1152 KB Output is correct
82 Correct 4 ms 1164 KB Output is correct
83 Correct 4 ms 1100 KB Output is correct
84 Correct 2 ms 972 KB Output is correct
85 Correct 5 ms 1100 KB Output is correct
86 Correct 4 ms 1100 KB Output is correct
87 Correct 4 ms 1100 KB Output is correct
88 Correct 2 ms 972 KB Output is correct
89 Correct 3 ms 972 KB Output is correct
90 Correct 3 ms 972 KB Output is correct
91 Correct 3 ms 972 KB Output is correct
92 Correct 2 ms 972 KB Output is correct
93 Correct 2 ms 972 KB Output is correct
94 Correct 2 ms 972 KB Output is correct
95 Correct 2 ms 972 KB Output is correct
96 Correct 2 ms 972 KB Output is correct
97 Correct 2 ms 972 KB Output is correct
98 Correct 2 ms 972 KB Output is correct
99 Correct 2 ms 972 KB Output is correct
100 Correct 2 ms 972 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 848 KB Output is correct
109 Correct 3 ms 844 KB Output is correct
110 Correct 2 ms 716 KB Output is correct
111 Correct 72 ms 19492 KB Output is correct
112 Correct 71 ms 19536 KB Output is correct
113 Correct 77 ms 19604 KB Output is correct
114 Correct 72 ms 19604 KB Output is correct
115 Correct 84 ms 19512 KB Output is correct
116 Correct 74 ms 19568 KB Output is correct
117 Correct 69 ms 19520 KB Output is correct
118 Correct 182 ms 24796 KB Output is correct
119 Correct 169 ms 24132 KB Output is correct
120 Correct 128 ms 22064 KB Output is correct
121 Correct 64 ms 19520 KB Output is correct
122 Correct 140 ms 22688 KB Output is correct
123 Correct 137 ms 22408 KB Output is correct
124 Correct 118 ms 22020 KB Output is correct
125 Correct 67 ms 19700 KB Output is correct
126 Correct 106 ms 20140 KB Output is correct
127 Correct 91 ms 20028 KB Output is correct
128 Correct 92 ms 20140 KB Output is correct
129 Correct 85 ms 19528 KB Output is correct
130 Correct 86 ms 19580 KB Output is correct
131 Correct 77 ms 19612 KB Output is correct
132 Correct 77 ms 19604 KB Output is correct
133 Correct 82 ms 19520 KB Output is correct
134 Correct 77 ms 19516 KB Output is correct
135 Correct 74 ms 19644 KB Output is correct
136 Correct 73 ms 19524 KB Output is correct
137 Correct 68 ms 19552 KB Output is correct
138 Correct 78 ms 19584 KB Output is correct
139 Correct 70 ms 19588 KB Output is correct
140 Correct 73 ms 19584 KB Output is correct
141 Correct 69 ms 19520 KB Output is correct
142 Correct 110 ms 17412 KB Output is correct
143 Correct 106 ms 17468 KB Output is correct
144 Correct 120 ms 17380 KB Output is correct
145 Correct 107 ms 17444 KB Output is correct
146 Correct 103 ms 17216 KB Output is correct
147 Correct 108 ms 17164 KB Output is correct
148 Correct 105 ms 17088 KB Output is correct
149 Correct 99 ms 16896 KB Output is correct
150 Correct 102 ms 16872 KB Output is correct
151 Correct 93 ms 16216 KB Output is correct
152 Correct 37 ms 11968 KB Output is correct
153 Correct 107 ms 17340 KB Output is correct
154 Correct 108 ms 17308 KB Output is correct
155 Correct 101 ms 17216 KB Output is correct
156 Correct 102 ms 17104 KB Output is correct
157 Correct 100 ms 16904 KB Output is correct
158 Correct 97 ms 16848 KB Output is correct
159 Correct 91 ms 16288 KB Output is correct
160 Correct 44 ms 11808 KB Output is correct
161 Correct 147 ms 18424 KB Output is correct
162 Correct 120 ms 18292 KB Output is correct
163 Correct 128 ms 18328 KB Output is correct
164 Correct 117 ms 18148 KB Output is correct
165 Correct 109 ms 18008 KB Output is correct
166 Correct 49 ms 19568 KB Output is correct
167 Correct 83 ms 22160 KB Output is correct
168 Correct 84 ms 22040 KB Output is correct
169 Correct 79 ms 21964 KB Output is correct
170 Correct 80 ms 21864 KB Output is correct
171 Correct 91 ms 21584 KB Output is correct
172 Correct 81 ms 22308 KB Output is correct
173 Correct 127 ms 14472 KB Output is correct
174 Correct 120 ms 14460 KB Output is correct
175 Correct 137 ms 14440 KB Output is correct
176 Correct 102 ms 13972 KB Output is correct