oj.uz

Submission #722610

# Submission time Handle Problem Language Result Execution time Memory
722610 2023-04-12T12:36:58 Z bachhoangxuan Event Hopping 2 (JOI21_event2) C++17
100 / 100
 184 ms 24512 KB 
#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define fi first
#define se second
const int maxn=100005;
const int maxl=20;
int n,k,L[maxn],R[maxn],nxt[2*maxn][maxl];
set<pii> s;
int cal(int l,int r){
    int ans=0;
    for(int i=18;i>=0;i--){
        if(nxt[l][i]<=r){
            ans+=(1<<i);
            l=nxt[l][i];
        }
    }
    return ans;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    cin >> n >> k;
    vector<int> p;
    for(int i=1;i<=n;i++){
        cin >> L[i] >> R[i];
        p.push_back(L[i]);p.push_back(R[i]);
    }
    sort(p.begin(),p.end());
    p.erase(unique(p.begin(),p.end()),p.end());
    for(int i=1;i<=n;i++){
        L[i]=lower_bound(p.begin(),p.end(),L[i])-p.begin()+1;
        R[i]=lower_bound(p.begin(),p.end(),R[i])-p.begin()+1;
    }
    int sz=(int)p.size();
    for(int i=1;i<=sz+1;i++) nxt[i][0]=sz+1;
    for(int i=1;i<=n;i++) nxt[L[i]][0]=min(nxt[L[i]][0],R[i]);
    for(int i=sz;i>=1;i--) nxt[i][0]=min(nxt[i][0],nxt[i+1][0]);
    for(int i=1;i<=18;i++){
        for(int j=1;j<=sz+1;j++) nxt[j][i]=nxt[nxt[j][i-1]][i-1];
    }
    s.insert({0,1});s.insert({sz,sz+1});
    int cur=cal(1,sz);
    if(cur<k){
        cout << -1 << '\n';
        return 0;
    }
    int cnt=0;
    for(int i=1;i<=n;i++){
        auto it=s.upper_bound(make_pair(L[i],R[i]));
        pii y=*it,x=*(--it);
        if(L[i]<x.se || R[i]>y.fi) continue;
        int add=cal(x.se,L[i])+cal(R[i],y.fi)+1-cal(x.se,y.fi);
        if(cur+add>=k){
            cur+=add;cnt++;
            s.insert({L[i],R[i]});
            cout << i << '\n';
        }
        if(cnt==k) break;
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 142 ms 23096 KB Output is correct
5 Correct 120 ms 22796 KB Output is correct
6 Correct 134 ms 22588 KB Output is correct
7 Correct 114 ms 21924 KB Output is correct
8 Correct 125 ms 23028 KB Output is correct
9 Correct 133 ms 22740 KB Output is correct
10 Correct 129 ms 22552 KB Output is correct
11 Correct 118 ms 21956 KB Output is correct
12 Correct 146 ms 21060 KB Output is correct
13 Correct 140 ms 20980 KB Output is correct
14 Correct 115 ms 20740 KB Output is correct
15 Correct 108 ms 20484 KB Output is correct
16 Correct 109 ms 18768 KB Output is correct
17 Correct 85 ms 18652 KB Output is correct
18 Correct 83 ms 18548 KB Output is correct
19 Correct 77 ms 18224 KB Output is correct
20 Correct 77 ms 18248 KB Output is correct
21 Correct 75 ms 18236 KB Output is correct
22 Correct 79 ms 18208 KB Output is correct
23 Correct 81 ms 18196 KB Output is correct
24 Correct 80 ms 18172 KB Output is correct
25 Correct 94 ms 18192 KB Output is correct
26 Correct 81 ms 18156 KB Output is correct
27 Correct 93 ms 18192 KB Output is correct
28 Correct 86 ms 18112 KB Output is correct
29 Correct 73 ms 18176 KB Output is correct
30 Correct 80 ms 18180 KB Output is correct
31 Correct 76 ms 18136 KB Output is correct
32 Correct 77 ms 18220 KB Output is correct
33 Correct 80 ms 18124 KB Output is correct
34 Correct 96 ms 19900 KB Output is correct
35 Correct 89 ms 19292 KB Output is correct
36 Correct 79 ms 18616 KB Output is correct
37 Correct 104 ms 20680 KB Output is correct
38 Correct 104 ms 20540 KB Output is correct
39 Correct 109 ms 20516 KB Output is correct
40 Correct 118 ms 20392 KB Output is correct
41 Correct 103 ms 20236 KB Output is correct
42 Correct 87 ms 18192 KB Output is correct
43 Correct 128 ms 20568 KB Output is correct
44 Correct 124 ms 20548 KB Output is correct
45 Correct 123 ms 20420 KB Output is correct
46 Correct 121 ms 20324 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 328 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 328 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 328 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 328 KB Output is correct
28 Correct 3 ms 852 KB Output is correct
29 Correct 3 ms 848 KB Output is correct
30 Correct 3 ms 852 KB Output is correct
31 Correct 3 ms 852 KB Output is correct
32 Correct 3 ms 852 KB Output is correct
33 Correct 4 ms 852 KB Output is correct
34 Correct 3 ms 852 KB Output is correct
35 Correct 4 ms 980 KB Output is correct
36 Correct 3 ms 980 KB Output is correct
37 Correct 4 ms 980 KB Output is correct
38 Correct 2 ms 852 KB Output is correct
39 Correct 4 ms 980 KB Output is correct
40 Correct 4 ms 932 KB Output is correct
41 Correct 3 ms 980 KB Output is correct
42 Correct 2 ms 852 KB Output is correct
43 Correct 4 ms 852 KB Output is correct
44 Correct 3 ms 852 KB Output is correct
45 Correct 4 ms 852 KB Output is correct
46 Correct 3 ms 852 KB Output is correct
47 Correct 3 ms 852 KB Output is correct
48 Correct 2 ms 852 KB Output is correct
49 Correct 2 ms 920 KB Output is correct
50 Correct 2 ms 852 KB Output is correct
51 Correct 2 ms 852 KB Output is correct
52 Correct 3 ms 852 KB Output is correct
53 Correct 2 ms 916 KB Output is correct
54 Correct 2 ms 852 KB Output is correct
55 Correct 3 ms 724 KB Output is correct
56 Correct 3 ms 724 KB Output is correct
57 Correct 3 ms 764 KB Output is correct
58 Correct 3 ms 728 KB Output is correct
59 Correct 3 ms 724 KB Output is correct
60 Correct 3 ms 724 KB Output is correct
61 Correct 4 ms 724 KB Output is correct
62 Correct 3 ms 724 KB Output is correct
63 Correct 3 ms 728 KB Output is correct
64 Correct 2 ms 584 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 142 ms 23096 KB Output is correct
5 Correct 120 ms 22796 KB Output is correct
6 Correct 134 ms 22588 KB Output is correct
7 Correct 114 ms 21924 KB Output is correct
8 Correct 125 ms 23028 KB Output is correct
9 Correct 133 ms 22740 KB Output is correct
10 Correct 129 ms 22552 KB Output is correct
11 Correct 118 ms 21956 KB Output is correct
12 Correct 146 ms 21060 KB Output is correct
13 Correct 140 ms 20980 KB Output is correct
14 Correct 115 ms 20740 KB Output is correct
15 Correct 108 ms 20484 KB Output is correct
16 Correct 109 ms 18768 KB Output is correct
17 Correct 85 ms 18652 KB Output is correct
18 Correct 83 ms 18548 KB Output is correct
19 Correct 77 ms 18224 KB Output is correct
20 Correct 77 ms 18248 KB Output is correct
21 Correct 75 ms 18236 KB Output is correct
22 Correct 79 ms 18208 KB Output is correct
23 Correct 81 ms 18196 KB Output is correct
24 Correct 80 ms 18172 KB Output is correct
25 Correct 94 ms 18192 KB Output is correct
26 Correct 81 ms 18156 KB Output is correct
27 Correct 93 ms 18192 KB Output is correct
28 Correct 86 ms 18112 KB Output is correct
29 Correct 73 ms 18176 KB Output is correct
30 Correct 80 ms 18180 KB Output is correct
31 Correct 76 ms 18136 KB Output is correct
32 Correct 77 ms 18220 KB Output is correct
33 Correct 80 ms 18124 KB Output is correct
34 Correct 96 ms 19900 KB Output is correct
35 Correct 89 ms 19292 KB Output is correct
36 Correct 79 ms 18616 KB Output is correct
37 Correct 104 ms 20680 KB Output is correct
38 Correct 104 ms 20540 KB Output is correct
39 Correct 109 ms 20516 KB Output is correct
40 Correct 118 ms 20392 KB Output is correct
41 Correct 103 ms 20236 KB Output is correct
42 Correct 87 ms 18192 KB Output is correct
43 Correct 128 ms 20568 KB Output is correct
44 Correct 124 ms 20548 KB Output is correct
45 Correct 123 ms 20420 KB Output is correct
46 Correct 121 ms 20324 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 328 KB Output is correct
53 Correct 1 ms 324 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 212 KB Output is correct
57 Correct 1 ms 328 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 328 KB Output is correct
64 Correct 1 ms 328 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 0 ms 340 KB Output is correct
68 Correct 1 ms 340 KB Output is correct
69 Correct 1 ms 340 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 1 ms 340 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 1 ms 328 KB Output is correct
74 Correct 3 ms 852 KB Output is correct
75 Correct 3 ms 848 KB Output is correct
76 Correct 3 ms 852 KB Output is correct
77 Correct 3 ms 852 KB Output is correct
78 Correct 3 ms 852 KB Output is correct
79 Correct 4 ms 852 KB Output is correct
80 Correct 3 ms 852 KB Output is correct
81 Correct 4 ms 980 KB Output is correct
82 Correct 3 ms 980 KB Output is correct
83 Correct 4 ms 980 KB Output is correct
84 Correct 2 ms 852 KB Output is correct
85 Correct 4 ms 980 KB Output is correct
86 Correct 4 ms 932 KB Output is correct
87 Correct 3 ms 980 KB Output is correct
88 Correct 2 ms 852 KB Output is correct
89 Correct 4 ms 852 KB Output is correct
90 Correct 3 ms 852 KB Output is correct
91 Correct 4 ms 852 KB Output is correct
92 Correct 3 ms 852 KB Output is correct
93 Correct 3 ms 852 KB Output is correct
94 Correct 2 ms 852 KB Output is correct
95 Correct 2 ms 920 KB Output is correct
96 Correct 2 ms 852 KB Output is correct
97 Correct 2 ms 852 KB Output is correct
98 Correct 3 ms 852 KB Output is correct
99 Correct 2 ms 916 KB Output is correct
100 Correct 2 ms 852 KB Output is correct
101 Correct 3 ms 724 KB Output is correct
102 Correct 3 ms 724 KB Output is correct
103 Correct 3 ms 764 KB Output is correct
104 Correct 3 ms 728 KB Output is correct
105 Correct 3 ms 724 KB Output is correct
106 Correct 3 ms 724 KB Output is correct
107 Correct 4 ms 724 KB Output is correct
108 Correct 3 ms 724 KB Output is correct
109 Correct 3 ms 728 KB Output is correct
110 Correct 2 ms 584 KB Output is correct
111 Correct 106 ms 19572 KB Output is correct
112 Correct 116 ms 19572 KB Output is correct
113 Correct 104 ms 19528 KB Output is correct
114 Correct 102 ms 19508 KB Output is correct
115 Correct 109 ms 19572 KB Output is correct
116 Correct 97 ms 19584 KB Output is correct
117 Correct 92 ms 19568 KB Output is correct
118 Correct 184 ms 24512 KB Output is correct
119 Correct 181 ms 23792 KB Output is correct
120 Correct 133 ms 21848 KB Output is correct
121 Correct 93 ms 19576 KB Output is correct
122 Correct 146 ms 22508 KB Output is correct
123 Correct 159 ms 22200 KB Output is correct
124 Correct 137 ms 21928 KB Output is correct
125 Correct 92 ms 19524 KB Output is correct
126 Correct 116 ms 20112 KB Output is correct
127 Correct 117 ms 19948 KB Output is correct
128 Correct 117 ms 19992 KB Output is correct
129 Correct 94 ms 19572 KB Output is correct
130 Correct 104 ms 19572 KB Output is correct
131 Correct 105 ms 19580 KB Output is correct
132 Correct 109 ms 19724 KB Output is correct
133 Correct 93 ms 19656 KB Output is correct
134 Correct 98 ms 19572 KB Output is correct
135 Correct 100 ms 19572 KB Output is correct
136 Correct 98 ms 19692 KB Output is correct
137 Correct 89 ms 19512 KB Output is correct
138 Correct 105 ms 19580 KB Output is correct
139 Correct 96 ms 19516 KB Output is correct
140 Correct 105 ms 19576 KB Output is correct
141 Correct 100 ms 19632 KB Output is correct
142 Correct 102 ms 16828 KB Output is correct
143 Correct 97 ms 16840 KB Output is correct
144 Correct 101 ms 16876 KB Output is correct
145 Correct 96 ms 16864 KB Output is correct
146 Correct 97 ms 16908 KB Output is correct
147 Correct 87 ms 16736 KB Output is correct
148 Correct 101 ms 16576 KB Output is correct
149 Correct 90 ms 16476 KB Output is correct
150 Correct 86 ms 16316 KB Output is correct
151 Correct 77 ms 15812 KB Output is correct
152 Correct 45 ms 11848 KB Output is correct
153 Correct 98 ms 16880 KB Output is correct
154 Correct 84 ms 16760 KB Output is correct
155 Correct 83 ms 16648 KB Output is correct
156 Correct 85 ms 16520 KB Output is correct
157 Correct 84 ms 16476 KB Output is correct
158 Correct 83 ms 16372 KB Output is correct
159 Correct 102 ms 15844 KB Output is correct
160 Correct 50 ms 11716 KB Output is correct
161 Correct 127 ms 18116 KB Output is correct
162 Correct 122 ms 18020 KB Output is correct
163 Correct 118 ms 17884 KB Output is correct
164 Correct 121 ms 17880 KB Output is correct
165 Correct 121 ms 17776 KB Output is correct
166 Correct 79 ms 19508 KB Output is correct
167 Correct 127 ms 21960 KB Output is correct
168 Correct 112 ms 21872 KB Output is correct
169 Correct 111 ms 21708 KB Output is correct
170 Correct 107 ms 21592 KB Output is correct
171 Correct 102 ms 21468 KB Output is correct
172 Correct 112 ms 22044 KB Output is correct
173 Correct 118 ms 14288 KB Output is correct
174 Correct 128 ms 14276 KB Output is correct
175 Correct 116 ms 14120 KB Output is correct
176 Correct 114 ms 13708 KB Output is correct