#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const int nx=1e5+5, kx=17, inf=2e9;
int n, k, a[nx], b[nx], pa[nx][kx], mx, vl;
struct range
{
int l, r;
range(int l, int r): l(l), r(r){}
bool operator< (const range &o) const
{
if (r==o.r) return l<o.l;
return r<o.r;
}
};
vector<range> v;
set<range> cur;
int query(int u, int limit)
{
int res=0;
if (limit==inf) limit--;
for (int i=kx-1; i>=0; i--) if (v[pa[u][i]].r<=limit) res+=(1<<i), u=pa[u][i];
return res;
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>k;
v.push_back(range(0, 0));
for (int i=1; i<=n; i++) cin>>a[i]>>b[i], v.push_back(range(a[i], b[i])), pa[i][0]=n+1;
v.push_back(range({inf, inf}));
sort(v.begin(), v.end());
int lst=0;
for (int i=1; i<=n+1; i++)
{
mx=max(mx, v[i].l);
while (lst<=n+1&&v[lst].r<=mx) pa[lst++][0]=i;
}
for (int i=1; i<kx; i++) for (int j=0; j<=n+1; j++) pa[j][i]=pa[pa[j][i-1]][i-1];
vl=query(0, inf);
if (vl<k) return cout<<-1, 0;
cur.insert(range(0, 0));
for (int i=1; i<=n; i++)
{
if (!k) continue;
auto itr=cur.upper_bound(range(a[i], b[i]));
if (itr!=cur.end()&&itr->l<b[i]) continue;
if (prev(itr)->r>a[i]) continue;
int tmp=vl, pidx=lower_bound(v.begin(), v.end(), *prev(itr))-v.begin(), cidx=lower_bound(v.begin(), v.end(), range(a[i], b[i]))-v.begin();
tmp-=query(pidx, (itr==cur.end())?inf:itr->l);
tmp+=query(pidx, a[i]);
tmp+=query(cidx, (itr==cur.end())?inf:itr->l);
if (tmp>=k-1) k--, cur.insert(range(a[i], b[i])), vl=tmp, cout<<i<<'\n';
}
}
# |
Verdict |
Execution time |
Memory |
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 |
73 ms |
13560 KB |
Output is correct |
5 |
Correct |
66 ms |
13260 KB |
Output is correct |
6 |
Correct |
59 ms |
13008 KB |
Output is correct |
7 |
Correct |
57 ms |
12552 KB |
Output is correct |
8 |
Correct |
70 ms |
13536 KB |
Output is correct |
9 |
Correct |
70 ms |
13260 KB |
Output is correct |
10 |
Correct |
62 ms |
13000 KB |
Output is correct |
11 |
Correct |
75 ms |
12572 KB |
Output is correct |
12 |
Correct |
53 ms |
11464 KB |
Output is correct |
13 |
Correct |
48 ms |
11472 KB |
Output is correct |
14 |
Correct |
50 ms |
11216 KB |
Output is correct |
15 |
Correct |
52 ms |
10860 KB |
Output is correct |
16 |
Correct |
36 ms |
9160 KB |
Output is correct |
17 |
Correct |
29 ms |
9168 KB |
Output is correct |
18 |
Correct |
32 ms |
9104 KB |
Output is correct |
19 |
Correct |
24 ms |
8660 KB |
Output is correct |
20 |
Correct |
28 ms |
8832 KB |
Output is correct |
21 |
Correct |
26 ms |
8660 KB |
Output is correct |
22 |
Correct |
25 ms |
8664 KB |
Output is correct |
23 |
Correct |
27 ms |
8884 KB |
Output is correct |
24 |
Correct |
27 ms |
8652 KB |
Output is correct |
25 |
Correct |
25 ms |
8660 KB |
Output is correct |
26 |
Correct |
25 ms |
8664 KB |
Output is correct |
27 |
Correct |
23 ms |
8636 KB |
Output is correct |
28 |
Correct |
20 ms |
8664 KB |
Output is correct |
29 |
Correct |
22 ms |
8780 KB |
Output is correct |
30 |
Correct |
22 ms |
8696 KB |
Output is correct |
31 |
Correct |
21 ms |
8664 KB |
Output is correct |
32 |
Correct |
23 ms |
8620 KB |
Output is correct |
33 |
Correct |
25 ms |
8660 KB |
Output is correct |
34 |
Correct |
38 ms |
10328 KB |
Output is correct |
35 |
Correct |
30 ms |
9676 KB |
Output is correct |
36 |
Correct |
24 ms |
9172 KB |
Output is correct |
37 |
Correct |
55 ms |
11216 KB |
Output is correct |
38 |
Correct |
46 ms |
11008 KB |
Output is correct |
39 |
Correct |
47 ms |
10956 KB |
Output is correct |
40 |
Correct |
42 ms |
10884 KB |
Output is correct |
41 |
Correct |
40 ms |
10696 KB |
Output is correct |
42 |
Correct |
26 ms |
8664 KB |
Output is correct |
43 |
Correct |
50 ms |
10956 KB |
Output is correct |
44 |
Correct |
56 ms |
11116 KB |
Output is correct |
45 |
Correct |
50 ms |
10824 KB |
Output is correct |
46 |
Correct |
45 ms |
10704 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
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 |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 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 |
348 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 |
344 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 |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
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 |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 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 |
348 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 |
344 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 |
344 KB |
Output is correct |
28 |
Correct |
1 ms |
600 KB |
Output is correct |
29 |
Correct |
1 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
1 ms |
600 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
604 KB |
Output is correct |
34 |
Correct |
1 ms |
604 KB |
Output is correct |
35 |
Correct |
2 ms |
860 KB |
Output is correct |
36 |
Correct |
2 ms |
860 KB |
Output is correct |
37 |
Correct |
2 ms |
604 KB |
Output is correct |
38 |
Correct |
1 ms |
604 KB |
Output is correct |
39 |
Correct |
2 ms |
860 KB |
Output is correct |
40 |
Correct |
2 ms |
604 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
604 KB |
Output is correct |
44 |
Correct |
1 ms |
604 KB |
Output is correct |
45 |
Correct |
1 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
604 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
604 KB |
Output is correct |
49 |
Correct |
2 ms |
604 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
604 KB |
Output is correct |
54 |
Correct |
1 ms |
604 KB |
Output is correct |
55 |
Correct |
2 ms |
860 KB |
Output is correct |
56 |
Correct |
2 ms |
692 KB |
Output is correct |
57 |
Correct |
2 ms |
860 KB |
Output is correct |
58 |
Correct |
2 ms |
860 KB |
Output is correct |
59 |
Correct |
1 ms |
860 KB |
Output is correct |
60 |
Correct |
2 ms |
860 KB |
Output is correct |
61 |
Correct |
1 ms |
860 KB |
Output is correct |
62 |
Correct |
2 ms |
860 KB |
Output is correct |
63 |
Correct |
2 ms |
604 KB |
Output is correct |
64 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
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 |
73 ms |
13560 KB |
Output is correct |
5 |
Correct |
66 ms |
13260 KB |
Output is correct |
6 |
Correct |
59 ms |
13008 KB |
Output is correct |
7 |
Correct |
57 ms |
12552 KB |
Output is correct |
8 |
Correct |
70 ms |
13536 KB |
Output is correct |
9 |
Correct |
70 ms |
13260 KB |
Output is correct |
10 |
Correct |
62 ms |
13000 KB |
Output is correct |
11 |
Correct |
75 ms |
12572 KB |
Output is correct |
12 |
Correct |
53 ms |
11464 KB |
Output is correct |
13 |
Correct |
48 ms |
11472 KB |
Output is correct |
14 |
Correct |
50 ms |
11216 KB |
Output is correct |
15 |
Correct |
52 ms |
10860 KB |
Output is correct |
16 |
Correct |
36 ms |
9160 KB |
Output is correct |
17 |
Correct |
29 ms |
9168 KB |
Output is correct |
18 |
Correct |
32 ms |
9104 KB |
Output is correct |
19 |
Correct |
24 ms |
8660 KB |
Output is correct |
20 |
Correct |
28 ms |
8832 KB |
Output is correct |
21 |
Correct |
26 ms |
8660 KB |
Output is correct |
22 |
Correct |
25 ms |
8664 KB |
Output is correct |
23 |
Correct |
27 ms |
8884 KB |
Output is correct |
24 |
Correct |
27 ms |
8652 KB |
Output is correct |
25 |
Correct |
25 ms |
8660 KB |
Output is correct |
26 |
Correct |
25 ms |
8664 KB |
Output is correct |
27 |
Correct |
23 ms |
8636 KB |
Output is correct |
28 |
Correct |
20 ms |
8664 KB |
Output is correct |
29 |
Correct |
22 ms |
8780 KB |
Output is correct |
30 |
Correct |
22 ms |
8696 KB |
Output is correct |
31 |
Correct |
21 ms |
8664 KB |
Output is correct |
32 |
Correct |
23 ms |
8620 KB |
Output is correct |
33 |
Correct |
25 ms |
8660 KB |
Output is correct |
34 |
Correct |
38 ms |
10328 KB |
Output is correct |
35 |
Correct |
30 ms |
9676 KB |
Output is correct |
36 |
Correct |
24 ms |
9172 KB |
Output is correct |
37 |
Correct |
55 ms |
11216 KB |
Output is correct |
38 |
Correct |
46 ms |
11008 KB |
Output is correct |
39 |
Correct |
47 ms |
10956 KB |
Output is correct |
40 |
Correct |
42 ms |
10884 KB |
Output is correct |
41 |
Correct |
40 ms |
10696 KB |
Output is correct |
42 |
Correct |
26 ms |
8664 KB |
Output is correct |
43 |
Correct |
50 ms |
10956 KB |
Output is correct |
44 |
Correct |
56 ms |
11116 KB |
Output is correct |
45 |
Correct |
50 ms |
10824 KB |
Output is correct |
46 |
Correct |
45 ms |
10704 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 |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
0 ms |
348 KB |
Output is correct |
56 |
Correct |
1 ms |
344 KB |
Output is correct |
57 |
Correct |
1 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 |
348 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 |
344 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 |
344 KB |
Output is correct |
74 |
Correct |
1 ms |
600 KB |
Output is correct |
75 |
Correct |
1 ms |
604 KB |
Output is correct |
76 |
Correct |
1 ms |
600 KB |
Output is correct |
77 |
Correct |
1 ms |
600 KB |
Output is correct |
78 |
Correct |
1 ms |
604 KB |
Output is correct |
79 |
Correct |
1 ms |
604 KB |
Output is correct |
80 |
Correct |
1 ms |
604 KB |
Output is correct |
81 |
Correct |
2 ms |
860 KB |
Output is correct |
82 |
Correct |
2 ms |
860 KB |
Output is correct |
83 |
Correct |
2 ms |
604 KB |
Output is correct |
84 |
Correct |
1 ms |
604 KB |
Output is correct |
85 |
Correct |
2 ms |
860 KB |
Output is correct |
86 |
Correct |
2 ms |
604 KB |
Output is correct |
87 |
Correct |
1 ms |
604 KB |
Output is correct |
88 |
Correct |
1 ms |
604 KB |
Output is correct |
89 |
Correct |
1 ms |
604 KB |
Output is correct |
90 |
Correct |
1 ms |
604 KB |
Output is correct |
91 |
Correct |
1 ms |
604 KB |
Output is correct |
92 |
Correct |
1 ms |
604 KB |
Output is correct |
93 |
Correct |
1 ms |
604 KB |
Output is correct |
94 |
Correct |
1 ms |
604 KB |
Output is correct |
95 |
Correct |
2 ms |
604 KB |
Output is correct |
96 |
Correct |
1 ms |
604 KB |
Output is correct |
97 |
Correct |
1 ms |
604 KB |
Output is correct |
98 |
Correct |
1 ms |
604 KB |
Output is correct |
99 |
Correct |
1 ms |
604 KB |
Output is correct |
100 |
Correct |
1 ms |
604 KB |
Output is correct |
101 |
Correct |
2 ms |
860 KB |
Output is correct |
102 |
Correct |
2 ms |
692 KB |
Output is correct |
103 |
Correct |
2 ms |
860 KB |
Output is correct |
104 |
Correct |
2 ms |
860 KB |
Output is correct |
105 |
Correct |
1 ms |
860 KB |
Output is correct |
106 |
Correct |
2 ms |
860 KB |
Output is correct |
107 |
Correct |
1 ms |
860 KB |
Output is correct |
108 |
Correct |
2 ms |
860 KB |
Output is correct |
109 |
Correct |
2 ms |
604 KB |
Output is correct |
110 |
Correct |
1 ms |
604 KB |
Output is correct |
111 |
Correct |
31 ms |
8808 KB |
Output is correct |
112 |
Correct |
33 ms |
8640 KB |
Output is correct |
113 |
Correct |
30 ms |
8664 KB |
Output is correct |
114 |
Correct |
27 ms |
8660 KB |
Output is correct |
115 |
Correct |
33 ms |
8660 KB |
Output is correct |
116 |
Correct |
23 ms |
8664 KB |
Output is correct |
117 |
Correct |
26 ms |
8784 KB |
Output is correct |
118 |
Correct |
100 ms |
13516 KB |
Output is correct |
119 |
Correct |
83 ms |
13008 KB |
Output is correct |
120 |
Correct |
59 ms |
10956 KB |
Output is correct |
121 |
Correct |
26 ms |
8660 KB |
Output is correct |
122 |
Correct |
86 ms |
11472 KB |
Output is correct |
123 |
Correct |
77 ms |
11208 KB |
Output is correct |
124 |
Correct |
70 ms |
10960 KB |
Output is correct |
125 |
Correct |
25 ms |
8660 KB |
Output is correct |
126 |
Correct |
52 ms |
9328 KB |
Output is correct |
127 |
Correct |
43 ms |
9164 KB |
Output is correct |
128 |
Correct |
42 ms |
9172 KB |
Output is correct |
129 |
Correct |
27 ms |
8664 KB |
Output is correct |
130 |
Correct |
33 ms |
8812 KB |
Output is correct |
131 |
Correct |
33 ms |
8664 KB |
Output is correct |
132 |
Correct |
31 ms |
8660 KB |
Output is correct |
133 |
Correct |
26 ms |
8660 KB |
Output is correct |
134 |
Correct |
33 ms |
8664 KB |
Output is correct |
135 |
Correct |
31 ms |
8664 KB |
Output is correct |
136 |
Correct |
26 ms |
8664 KB |
Output is correct |
137 |
Correct |
26 ms |
8804 KB |
Output is correct |
138 |
Correct |
30 ms |
8664 KB |
Output is correct |
139 |
Correct |
29 ms |
8572 KB |
Output is correct |
140 |
Correct |
27 ms |
8664 KB |
Output is correct |
141 |
Correct |
26 ms |
8736 KB |
Output is correct |
142 |
Correct |
71 ms |
13712 KB |
Output is correct |
143 |
Correct |
72 ms |
13940 KB |
Output is correct |
144 |
Correct |
72 ms |
13776 KB |
Output is correct |
145 |
Correct |
75 ms |
13776 KB |
Output is correct |
146 |
Correct |
74 ms |
13676 KB |
Output is correct |
147 |
Correct |
67 ms |
13520 KB |
Output is correct |
148 |
Correct |
71 ms |
13420 KB |
Output is correct |
149 |
Correct |
69 ms |
13260 KB |
Output is correct |
150 |
Correct |
70 ms |
13148 KB |
Output is correct |
151 |
Correct |
64 ms |
12672 KB |
Output is correct |
152 |
Correct |
22 ms |
8664 KB |
Output is correct |
153 |
Correct |
75 ms |
13680 KB |
Output is correct |
154 |
Correct |
94 ms |
13772 KB |
Output is correct |
155 |
Correct |
73 ms |
13620 KB |
Output is correct |
156 |
Correct |
72 ms |
13512 KB |
Output is correct |
157 |
Correct |
69 ms |
13268 KB |
Output is correct |
158 |
Correct |
73 ms |
13264 KB |
Output is correct |
159 |
Correct |
65 ms |
12744 KB |
Output is correct |
160 |
Correct |
22 ms |
8664 KB |
Output is correct |
161 |
Correct |
75 ms |
11216 KB |
Output is correct |
162 |
Correct |
65 ms |
10988 KB |
Output is correct |
163 |
Correct |
62 ms |
10952 KB |
Output is correct |
164 |
Correct |
65 ms |
10952 KB |
Output is correct |
165 |
Correct |
62 ms |
10700 KB |
Output is correct |
166 |
Correct |
23 ms |
8660 KB |
Output is correct |
167 |
Correct |
47 ms |
11192 KB |
Output is correct |
168 |
Correct |
48 ms |
10868 KB |
Output is correct |
169 |
Correct |
63 ms |
10876 KB |
Output is correct |
170 |
Correct |
48 ms |
10696 KB |
Output is correct |
171 |
Correct |
47 ms |
11216 KB |
Output is correct |
172 |
Correct |
56 ms |
11212 KB |
Output is correct |
173 |
Correct |
79 ms |
11072 KB |
Output is correct |
174 |
Correct |
86 ms |
11212 KB |
Output is correct |
175 |
Correct |
78 ms |
11212 KB |
Output is correct |
176 |
Correct |
60 ms |
10704 KB |
Output is correct |