#include "jumps.h"
#include <bits/stdc++.h>
#define pii pair<int,int>
using namespace std;
int n, l[200005], r[200005], jump[200005][20], jump2[200005][20];
vector<int> h;
struct segTree {
pii seg[4*200005];
void build(int i, int l, int r) {
if(l==r) {
seg[i] = {h[l], l};
return;
}
int m = (l+r)/2;
build(i*2+1, l, m);
build(i*2+2, m+1, r);
seg[i] = max(seg[i*2+1], seg[i*2+2]);
}
pii query(int i, int l, int r, int wl, int wr) {
if(wl>r || wr<l) return {-2e9, -1};
if(wl<=l && wr>=r) return seg[i];
int m = (l+r)/2;
return max(query(i*2+1, l, m, wl, wr), query(i*2+2, m+1, r, wl, wr));
}
}t;
void init(int N, std::vector<int> H) {
n = N;
h = H;
stack<int> st;
for(int i=0;i<n;i++) {
while(!st.empty() && H[st.top()]<H[i]) st.pop();
if(st.empty()) l[i] = -1;
else l[i] = st.top();
st.push(i);
}
while(!st.empty()) st.pop();
for(int i=n-1;i>=0;i--) {
while(!st.empty() && H[st.top()]<H[i]) st.pop();
if(st.empty()) r[i] = n;
else r[i] = st.top();
st.push(i);
}
t.build(0, 0, n-1);
h.push_back(n+1);
for(int i=0;i<n;i++) {
int mx = l[i], mx2 = r[i];
if(mx==-1) mx = n;
if(h[mx]<h[mx2]) swap(mx, mx2);
jump[i][0] = mx;
jump2[i][0] = mx2;
}
jump[n][0] = jump2[n][0] = n;
for(int j=1;j<20;j++) for(int i=0;i<=n;i++) jump[i][j] = jump[jump[i][j-1]][j-1];
for(int j=1;j<20;j++) for(int i=0;i<=n;i++) jump2[i][j] = jump2[jump2[i][j-1]][j-1];
}
int minimum_jumps(int A, int B, int C, int D) {
A = t.query(0, 0, n-1, max(A, l[C]+1), min(B, r[C]-1)).second;
if(A==-1) return -1;
int ans = 0;
for(int i=19;i>=0;i--) if(h[jump[A][i]]<h[C]) {
A = jump[A][i];
ans += (1<<i);
}
if(jump[A][0]==C) return ans+1;
for(int i=19;i>=0;i--) if(h[jump2[A][i]]<h[C]) {
A = jump2[A][i];
ans += (1<<i);
}
if(jump2[A][0]==C) return ans+1;
return -1;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6488 KB |
Output is correct |
2 |
Correct |
1 ms |
6488 KB |
Output is correct |
3 |
Correct |
103 ms |
39920 KB |
Output is correct |
4 |
Correct |
794 ms |
42568 KB |
Output is correct |
5 |
Correct |
659 ms |
26796 KB |
Output is correct |
6 |
Correct |
772 ms |
42744 KB |
Output is correct |
7 |
Correct |
656 ms |
35504 KB |
Output is correct |
8 |
Correct |
807 ms |
42672 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
6488 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
6488 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
6488 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6488 KB |
Output is correct |
2 |
Correct |
1 ms |
6488 KB |
Output is correct |
3 |
Correct |
1 ms |
6488 KB |
Output is correct |
4 |
Correct |
148 ms |
26292 KB |
Output is correct |
5 |
Correct |
618 ms |
41876 KB |
Output is correct |
6 |
Correct |
394 ms |
15316 KB |
Output is correct |
7 |
Correct |
628 ms |
41904 KB |
Output is correct |
8 |
Correct |
363 ms |
21832 KB |
Output is correct |
9 |
Correct |
598 ms |
42052 KB |
Output is correct |
10 |
Correct |
748 ms |
42568 KB |
Output is correct |
11 |
Correct |
748 ms |
42664 KB |
Output is correct |
12 |
Correct |
718 ms |
42392 KB |
Output is correct |
13 |
Correct |
596 ms |
41792 KB |
Output is correct |
14 |
Correct |
719 ms |
42112 KB |
Output is correct |
15 |
Correct |
611 ms |
42920 KB |
Output is correct |
16 |
Correct |
568 ms |
42704 KB |
Output is correct |
17 |
Correct |
1 ms |
6488 KB |
Output is correct |
18 |
Correct |
1 ms |
6488 KB |
Output is correct |
19 |
Correct |
1 ms |
6740 KB |
Output is correct |
20 |
Correct |
2 ms |
6488 KB |
Output is correct |
21 |
Correct |
2 ms |
6488 KB |
Output is correct |
22 |
Correct |
2 ms |
6488 KB |
Output is correct |
23 |
Correct |
2 ms |
6488 KB |
Output is correct |
24 |
Correct |
2 ms |
6488 KB |
Output is correct |
25 |
Correct |
1 ms |
6488 KB |
Output is correct |
26 |
Correct |
1 ms |
6488 KB |
Output is correct |
27 |
Correct |
14 ms |
8536 KB |
Output is correct |
28 |
Correct |
9 ms |
8536 KB |
Output is correct |
29 |
Correct |
9 ms |
8536 KB |
Output is correct |
30 |
Correct |
9 ms |
8608 KB |
Output is correct |
31 |
Correct |
9 ms |
8536 KB |
Output is correct |
32 |
Correct |
1 ms |
6488 KB |
Output is correct |
33 |
Correct |
25 ms |
30700 KB |
Output is correct |
34 |
Correct |
55 ms |
41900 KB |
Output is correct |
35 |
Correct |
50 ms |
42392 KB |
Output is correct |
36 |
Correct |
55 ms |
42036 KB |
Output is correct |
37 |
Correct |
57 ms |
42280 KB |
Output is correct |
38 |
Correct |
56 ms |
42764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6488 KB |
Output is correct |
2 |
Correct |
1 ms |
6488 KB |
Output is correct |
3 |
Correct |
1 ms |
6488 KB |
Output is correct |
4 |
Correct |
148 ms |
26292 KB |
Output is correct |
5 |
Correct |
618 ms |
41876 KB |
Output is correct |
6 |
Correct |
394 ms |
15316 KB |
Output is correct |
7 |
Correct |
628 ms |
41904 KB |
Output is correct |
8 |
Correct |
363 ms |
21832 KB |
Output is correct |
9 |
Correct |
598 ms |
42052 KB |
Output is correct |
10 |
Correct |
748 ms |
42568 KB |
Output is correct |
11 |
Correct |
748 ms |
42664 KB |
Output is correct |
12 |
Correct |
718 ms |
42392 KB |
Output is correct |
13 |
Correct |
596 ms |
41792 KB |
Output is correct |
14 |
Correct |
719 ms |
42112 KB |
Output is correct |
15 |
Correct |
611 ms |
42920 KB |
Output is correct |
16 |
Correct |
568 ms |
42704 KB |
Output is correct |
17 |
Correct |
1 ms |
6488 KB |
Output is correct |
18 |
Correct |
1 ms |
6488 KB |
Output is correct |
19 |
Correct |
1 ms |
6740 KB |
Output is correct |
20 |
Correct |
2 ms |
6488 KB |
Output is correct |
21 |
Correct |
2 ms |
6488 KB |
Output is correct |
22 |
Correct |
2 ms |
6488 KB |
Output is correct |
23 |
Correct |
2 ms |
6488 KB |
Output is correct |
24 |
Correct |
2 ms |
6488 KB |
Output is correct |
25 |
Correct |
1 ms |
6488 KB |
Output is correct |
26 |
Correct |
1 ms |
6488 KB |
Output is correct |
27 |
Correct |
14 ms |
8536 KB |
Output is correct |
28 |
Correct |
9 ms |
8536 KB |
Output is correct |
29 |
Correct |
9 ms |
8536 KB |
Output is correct |
30 |
Correct |
9 ms |
8608 KB |
Output is correct |
31 |
Correct |
9 ms |
8536 KB |
Output is correct |
32 |
Correct |
1 ms |
6488 KB |
Output is correct |
33 |
Correct |
25 ms |
30700 KB |
Output is correct |
34 |
Correct |
55 ms |
41900 KB |
Output is correct |
35 |
Correct |
50 ms |
42392 KB |
Output is correct |
36 |
Correct |
55 ms |
42036 KB |
Output is correct |
37 |
Correct |
57 ms |
42280 KB |
Output is correct |
38 |
Correct |
56 ms |
42764 KB |
Output is correct |
39 |
Correct |
1 ms |
6488 KB |
Output is correct |
40 |
Correct |
1 ms |
6488 KB |
Output is correct |
41 |
Correct |
1 ms |
6488 KB |
Output is correct |
42 |
Correct |
141 ms |
26032 KB |
Output is correct |
43 |
Correct |
600 ms |
41892 KB |
Output is correct |
44 |
Correct |
374 ms |
15280 KB |
Output is correct |
45 |
Correct |
678 ms |
41792 KB |
Output is correct |
46 |
Correct |
317 ms |
21832 KB |
Output is correct |
47 |
Correct |
613 ms |
42048 KB |
Output is correct |
48 |
Correct |
735 ms |
42568 KB |
Output is correct |
49 |
Correct |
749 ms |
42680 KB |
Output is correct |
50 |
Correct |
722 ms |
42392 KB |
Output is correct |
51 |
Correct |
603 ms |
41912 KB |
Output is correct |
52 |
Correct |
739 ms |
42108 KB |
Output is correct |
53 |
Correct |
638 ms |
42764 KB |
Output is correct |
54 |
Correct |
609 ms |
42672 KB |
Output is correct |
55 |
Correct |
1 ms |
6488 KB |
Output is correct |
56 |
Correct |
87 ms |
41896 KB |
Output is correct |
57 |
Correct |
590 ms |
41884 KB |
Output is correct |
58 |
Correct |
345 ms |
15308 KB |
Output is correct |
59 |
Correct |
623 ms |
41904 KB |
Output is correct |
60 |
Correct |
234 ms |
21940 KB |
Output is correct |
61 |
Correct |
584 ms |
41908 KB |
Output is correct |
62 |
Correct |
819 ms |
42660 KB |
Output is correct |
63 |
Correct |
708 ms |
42396 KB |
Output is correct |
64 |
Correct |
748 ms |
42456 KB |
Output is correct |
65 |
Correct |
581 ms |
41908 KB |
Output is correct |
66 |
Correct |
707 ms |
42296 KB |
Output is correct |
67 |
Correct |
667 ms |
42760 KB |
Output is correct |
68 |
Correct |
603 ms |
42668 KB |
Output is correct |
69 |
Correct |
1 ms |
6488 KB |
Output is correct |
70 |
Correct |
1 ms |
6488 KB |
Output is correct |
71 |
Correct |
2 ms |
6488 KB |
Output is correct |
72 |
Correct |
2 ms |
6488 KB |
Output is correct |
73 |
Correct |
2 ms |
6488 KB |
Output is correct |
74 |
Correct |
2 ms |
6488 KB |
Output is correct |
75 |
Correct |
2 ms |
6488 KB |
Output is correct |
76 |
Correct |
1 ms |
6488 KB |
Output is correct |
77 |
Correct |
1 ms |
6488 KB |
Output is correct |
78 |
Correct |
1 ms |
6488 KB |
Output is correct |
79 |
Correct |
2 ms |
6488 KB |
Output is correct |
80 |
Correct |
2 ms |
6488 KB |
Output is correct |
81 |
Correct |
2 ms |
6488 KB |
Output is correct |
82 |
Correct |
2 ms |
6488 KB |
Output is correct |
83 |
Correct |
2 ms |
6488 KB |
Output is correct |
84 |
Correct |
1 ms |
6488 KB |
Output is correct |
85 |
Correct |
2 ms |
6488 KB |
Output is correct |
86 |
Correct |
10 ms |
8536 KB |
Output is correct |
87 |
Correct |
12 ms |
8536 KB |
Output is correct |
88 |
Correct |
9 ms |
8536 KB |
Output is correct |
89 |
Correct |
11 ms |
8536 KB |
Output is correct |
90 |
Correct |
13 ms |
8536 KB |
Output is correct |
91 |
Correct |
1 ms |
6496 KB |
Output is correct |
92 |
Correct |
1 ms |
6488 KB |
Output is correct |
93 |
Correct |
9 ms |
8536 KB |
Output is correct |
94 |
Correct |
10 ms |
8536 KB |
Output is correct |
95 |
Correct |
9 ms |
8536 KB |
Output is correct |
96 |
Correct |
9 ms |
8536 KB |
Output is correct |
97 |
Correct |
10 ms |
8536 KB |
Output is correct |
98 |
Correct |
1 ms |
6488 KB |
Output is correct |
99 |
Correct |
54 ms |
42172 KB |
Output is correct |
100 |
Correct |
55 ms |
42088 KB |
Output is correct |
101 |
Correct |
51 ms |
42568 KB |
Output is correct |
102 |
Correct |
56 ms |
41896 KB |
Output is correct |
103 |
Correct |
64 ms |
42296 KB |
Output is correct |
104 |
Correct |
50 ms |
42660 KB |
Output is correct |
105 |
Correct |
1 ms |
6488 KB |
Output is correct |
106 |
Correct |
26 ms |
30668 KB |
Output is correct |
107 |
Correct |
58 ms |
41908 KB |
Output is correct |
108 |
Correct |
47 ms |
42412 KB |
Output is correct |
109 |
Correct |
59 ms |
41916 KB |
Output is correct |
110 |
Correct |
52 ms |
42100 KB |
Output is correct |
111 |
Correct |
57 ms |
42648 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6488 KB |
Output is correct |
2 |
Correct |
1 ms |
6488 KB |
Output is correct |
3 |
Correct |
103 ms |
39920 KB |
Output is correct |
4 |
Correct |
794 ms |
42568 KB |
Output is correct |
5 |
Correct |
659 ms |
26796 KB |
Output is correct |
6 |
Correct |
772 ms |
42744 KB |
Output is correct |
7 |
Correct |
656 ms |
35504 KB |
Output is correct |
8 |
Correct |
807 ms |
42672 KB |
Output is correct |
9 |
Incorrect |
1 ms |
6488 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |