#include <bits/stdc++.h>
using namespace std ;
#include <ext/pb_ds/assoc_container.hpp> // Common file
#include <ext/pb_ds/tree_policy.hpp> // Including tree_order_statistics_node_update
using namespace __gnu_pbds;
template<class T> using ordered_set = tree<T, null_type , less<T> , rb_tree_tag , tree_order_statistics_node_update> ;
const int MAX = 2e5 + 10 ;
int L[MAX] , R[MAX] ;
int n , q ;
int val[MAX] , to[MAX][20] ;
void preprocess()
{
set< array<int , 3> >s ;
int last = 0 ;
to[n+1][0] = n+1 ;
for(int i = 1 ; i <= n ; ++i)
{
to[i][0] = n+1 ;
auto it = s.lower_bound({L[i] , -1 , -1}) ;
if(it != s.begin())
--it ;
while(it != s.end())
{
array<int , 3>a = *it ;
if(a[0] > R[i])
break ;
if(a[1] >= L[i])
val[i] = max(val[i] , a[2]) ;
++it ;
}
for(int j = last+1 ; j <= val[i] ; ++j)
s.erase({L[j] , R[j] , j}) ;
last = max(last , val[i]) ;
s.insert({L[i] , R[i] , i}) ;
to[val[i]][0] = i ;
}
for(int i = n-1 ; i >= 1 ; --i)
to[i][0] = min(to[i][0] , to[i+1][0]) ;
for(int j = 1 ; j < 20 ; ++j)
{
for(int i = 1 ; i <= n+1 ; ++i)
to[i][j] = to[to[i][j-1]][j-1] ;
}
}
int solve(int l , int r)
{
int ans = 1 ;
for(int i = 19 ; i >= 0 ; --i)
{
if(to[l][i] <= r)
ans += (1 << i) , l = to[l][i] ;
}
return ans ;
}
int main()
{
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
cin>>n ;
for(int i = 1 ; i <= n ; ++i)
cin>>L[i]>>R[i] ;
preprocess() ;
cin>>q ;
for(int i = 1 ; i <= q ; ++i)
{
int l , r ;
cin>>l>>r ;
cout<<solve(l , r)<<"\n" ;
}
return 0 ;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
91 ms |
17484 KB |
Output is correct |
2 |
Correct |
87 ms |
20816 KB |
Output is correct |
3 |
Correct |
87 ms |
20976 KB |
Output is correct |
4 |
Correct |
121 ms |
21196 KB |
Output is correct |
5 |
Correct |
98 ms |
22120 KB |
Output is correct |
6 |
Correct |
85 ms |
20080 KB |
Output is correct |
7 |
Correct |
82 ms |
20488 KB |
Output is correct |
8 |
Correct |
95 ms |
20628 KB |
Output is correct |
9 |
Correct |
96 ms |
21116 KB |
Output is correct |
10 |
Correct |
95 ms |
20420 KB |
Output is correct |
11 |
Correct |
208 ms |
32540 KB |
Output is correct |
12 |
Correct |
175 ms |
30584 KB |
Output is correct |
13 |
Correct |
179 ms |
30528 KB |
Output is correct |
14 |
Correct |
205 ms |
27316 KB |
Output is correct |
15 |
Correct |
186 ms |
25156 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
94 ms |
21444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
724 KB |
Output is correct |
2 |
Correct |
4 ms |
852 KB |
Output is correct |
3 |
Correct |
5 ms |
904 KB |
Output is correct |
4 |
Correct |
4 ms |
852 KB |
Output is correct |
5 |
Correct |
6 ms |
852 KB |
Output is correct |
6 |
Correct |
4 ms |
848 KB |
Output is correct |
7 |
Correct |
5 ms |
852 KB |
Output is correct |
8 |
Correct |
4 ms |
852 KB |
Output is correct |
9 |
Correct |
4 ms |
852 KB |
Output is correct |
10 |
Correct |
6 ms |
860 KB |
Output is correct |
11 |
Correct |
5 ms |
1108 KB |
Output is correct |
12 |
Correct |
4 ms |
1108 KB |
Output is correct |
13 |
Correct |
4 ms |
1108 KB |
Output is correct |
14 |
Correct |
5 ms |
980 KB |
Output is correct |
15 |
Correct |
5 ms |
1108 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
3 ms |
980 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
724 KB |
Output is correct |
2 |
Correct |
4 ms |
852 KB |
Output is correct |
3 |
Correct |
5 ms |
904 KB |
Output is correct |
4 |
Correct |
4 ms |
852 KB |
Output is correct |
5 |
Correct |
6 ms |
852 KB |
Output is correct |
6 |
Correct |
4 ms |
848 KB |
Output is correct |
7 |
Correct |
5 ms |
852 KB |
Output is correct |
8 |
Correct |
4 ms |
852 KB |
Output is correct |
9 |
Correct |
4 ms |
852 KB |
Output is correct |
10 |
Correct |
6 ms |
860 KB |
Output is correct |
11 |
Correct |
5 ms |
1108 KB |
Output is correct |
12 |
Correct |
4 ms |
1108 KB |
Output is correct |
13 |
Correct |
4 ms |
1108 KB |
Output is correct |
14 |
Correct |
5 ms |
980 KB |
Output is correct |
15 |
Correct |
5 ms |
1108 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
3 ms |
980 KB |
Output is correct |
18 |
Correct |
70 ms |
3532 KB |
Output is correct |
19 |
Correct |
76 ms |
3280 KB |
Output is correct |
20 |
Correct |
74 ms |
3520 KB |
Output is correct |
21 |
Correct |
61 ms |
3296 KB |
Output is correct |
22 |
Correct |
63 ms |
3404 KB |
Output is correct |
23 |
Correct |
73 ms |
3308 KB |
Output is correct |
24 |
Correct |
66 ms |
3496 KB |
Output is correct |
25 |
Correct |
73 ms |
3496 KB |
Output is correct |
26 |
Correct |
64 ms |
3420 KB |
Output is correct |
27 |
Correct |
63 ms |
3276 KB |
Output is correct |
28 |
Correct |
65 ms |
3184 KB |
Output is correct |
29 |
Correct |
53 ms |
3272 KB |
Output is correct |
30 |
Correct |
51 ms |
3256 KB |
Output is correct |
31 |
Correct |
56 ms |
3092 KB |
Output is correct |
32 |
Correct |
66 ms |
3152 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
56 ms |
3252 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
99 ms |
18204 KB |
Output is correct |
2 |
Correct |
94 ms |
21692 KB |
Output is correct |
3 |
Correct |
96 ms |
20300 KB |
Output is correct |
4 |
Correct |
88 ms |
19940 KB |
Output is correct |
5 |
Correct |
93 ms |
20672 KB |
Output is correct |
6 |
Correct |
86 ms |
20272 KB |
Output is correct |
7 |
Correct |
89 ms |
20044 KB |
Output is correct |
8 |
Correct |
92 ms |
20200 KB |
Output is correct |
9 |
Correct |
93 ms |
20096 KB |
Output is correct |
10 |
Correct |
116 ms |
21580 KB |
Output is correct |
11 |
Correct |
178 ms |
30336 KB |
Output is correct |
12 |
Correct |
204 ms |
33240 KB |
Output is correct |
13 |
Correct |
201 ms |
30288 KB |
Output is correct |
14 |
Correct |
213 ms |
25272 KB |
Output is correct |
15 |
Correct |
210 ms |
27596 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
80 ms |
20584 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
91 ms |
17484 KB |
Output is correct |
2 |
Correct |
87 ms |
20816 KB |
Output is correct |
3 |
Correct |
87 ms |
20976 KB |
Output is correct |
4 |
Correct |
121 ms |
21196 KB |
Output is correct |
5 |
Correct |
98 ms |
22120 KB |
Output is correct |
6 |
Correct |
85 ms |
20080 KB |
Output is correct |
7 |
Correct |
82 ms |
20488 KB |
Output is correct |
8 |
Correct |
95 ms |
20628 KB |
Output is correct |
9 |
Correct |
96 ms |
21116 KB |
Output is correct |
10 |
Correct |
95 ms |
20420 KB |
Output is correct |
11 |
Correct |
208 ms |
32540 KB |
Output is correct |
12 |
Correct |
175 ms |
30584 KB |
Output is correct |
13 |
Correct |
179 ms |
30528 KB |
Output is correct |
14 |
Correct |
205 ms |
27316 KB |
Output is correct |
15 |
Correct |
186 ms |
25156 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
94 ms |
21444 KB |
Output is correct |
18 |
Correct |
4 ms |
724 KB |
Output is correct |
19 |
Correct |
4 ms |
852 KB |
Output is correct |
20 |
Correct |
5 ms |
904 KB |
Output is correct |
21 |
Correct |
4 ms |
852 KB |
Output is correct |
22 |
Correct |
6 ms |
852 KB |
Output is correct |
23 |
Correct |
4 ms |
848 KB |
Output is correct |
24 |
Correct |
5 ms |
852 KB |
Output is correct |
25 |
Correct |
4 ms |
852 KB |
Output is correct |
26 |
Correct |
4 ms |
852 KB |
Output is correct |
27 |
Correct |
6 ms |
860 KB |
Output is correct |
28 |
Correct |
5 ms |
1108 KB |
Output is correct |
29 |
Correct |
4 ms |
1108 KB |
Output is correct |
30 |
Correct |
4 ms |
1108 KB |
Output is correct |
31 |
Correct |
5 ms |
980 KB |
Output is correct |
32 |
Correct |
5 ms |
1108 KB |
Output is correct |
33 |
Correct |
0 ms |
340 KB |
Output is correct |
34 |
Correct |
3 ms |
980 KB |
Output is correct |
35 |
Correct |
70 ms |
3532 KB |
Output is correct |
36 |
Correct |
76 ms |
3280 KB |
Output is correct |
37 |
Correct |
74 ms |
3520 KB |
Output is correct |
38 |
Correct |
61 ms |
3296 KB |
Output is correct |
39 |
Correct |
63 ms |
3404 KB |
Output is correct |
40 |
Correct |
73 ms |
3308 KB |
Output is correct |
41 |
Correct |
66 ms |
3496 KB |
Output is correct |
42 |
Correct |
73 ms |
3496 KB |
Output is correct |
43 |
Correct |
64 ms |
3420 KB |
Output is correct |
44 |
Correct |
63 ms |
3276 KB |
Output is correct |
45 |
Correct |
65 ms |
3184 KB |
Output is correct |
46 |
Correct |
53 ms |
3272 KB |
Output is correct |
47 |
Correct |
51 ms |
3256 KB |
Output is correct |
48 |
Correct |
56 ms |
3092 KB |
Output is correct |
49 |
Correct |
66 ms |
3152 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
56 ms |
3252 KB |
Output is correct |
52 |
Correct |
99 ms |
18204 KB |
Output is correct |
53 |
Correct |
94 ms |
21692 KB |
Output is correct |
54 |
Correct |
96 ms |
20300 KB |
Output is correct |
55 |
Correct |
88 ms |
19940 KB |
Output is correct |
56 |
Correct |
93 ms |
20672 KB |
Output is correct |
57 |
Correct |
86 ms |
20272 KB |
Output is correct |
58 |
Correct |
89 ms |
20044 KB |
Output is correct |
59 |
Correct |
92 ms |
20200 KB |
Output is correct |
60 |
Correct |
93 ms |
20096 KB |
Output is correct |
61 |
Correct |
116 ms |
21580 KB |
Output is correct |
62 |
Correct |
178 ms |
30336 KB |
Output is correct |
63 |
Correct |
204 ms |
33240 KB |
Output is correct |
64 |
Correct |
201 ms |
30288 KB |
Output is correct |
65 |
Correct |
213 ms |
25272 KB |
Output is correct |
66 |
Correct |
210 ms |
27596 KB |
Output is correct |
67 |
Correct |
1 ms |
340 KB |
Output is correct |
68 |
Correct |
80 ms |
20584 KB |
Output is correct |
69 |
Correct |
288 ms |
24068 KB |
Output is correct |
70 |
Correct |
284 ms |
25304 KB |
Output is correct |
71 |
Correct |
290 ms |
23516 KB |
Output is correct |
72 |
Correct |
266 ms |
24780 KB |
Output is correct |
73 |
Correct |
260 ms |
24344 KB |
Output is correct |
74 |
Correct |
296 ms |
25780 KB |
Output is correct |
75 |
Correct |
298 ms |
23864 KB |
Output is correct |
76 |
Correct |
325 ms |
25600 KB |
Output is correct |
77 |
Correct |
300 ms |
23808 KB |
Output is correct |
78 |
Correct |
248 ms |
24164 KB |
Output is correct |
79 |
Correct |
248 ms |
35972 KB |
Output is correct |
80 |
Correct |
277 ms |
33452 KB |
Output is correct |
81 |
Correct |
249 ms |
33208 KB |
Output is correct |
82 |
Correct |
254 ms |
28364 KB |
Output is correct |
83 |
Correct |
266 ms |
27340 KB |
Output is correct |
84 |
Correct |
1 ms |
336 KB |
Output is correct |
85 |
Correct |
162 ms |
23832 KB |
Output is correct |