#include <bits/stdc++.h>
using namespace std;
int dist[200002];
int l[200002], r[200002];
vector<pair<int, int>> v;
int N; bool st1 = true;
int up[200002][21], dis[200002][21];
vector<int> H;
void init(int N_tmp, vector<int> H_tmp) {
N = N_tmp; H = H_tmp;
for(int i = 0; i < N; i++){
v.push_back({H[i], i + 1});
if(H[i] != i + 1) st1 = false;
}
sort(v.begin(), v.end(), greater<pair<int, int>>());
set<pair<int, int>> v2;
for(auto [x, tmp] : v){
if(v2.empty()){
v2.insert({tmp, x});
continue;
}
auto it = v2.lower_bound({tmp, 0});
// printf(">> %d %d : %d %d\n", x, tmp, (*it).first, (*it).second);
if(it != v2.end()) r[x] = (*it).second;
if(it != v2.begin()){
it--;
l[x] = (*it).second;
}
if((r[x] == 0 && l[x] != 0) || (l[x] < r[x] && l[x] != 0)) up[x][0] = l[x];
else if(l[x] == 0 || r[x] < l[x]) up[x][0] = r[x];
dis[x][0] = 1;
int i = 1;
if(l[x] != 0 && r[x] != 0){
up[x][1] = max(l[x], r[x]);
dis[x][1] = 1; i++;
}
// printf("!!! %d : %d %d: %d %d\n", x, l[x], r[x], up[x][0], up[x][1]);
for(; i <= 20; i++){
up[x][i] = up[up[x][i - 1]][i - 1];
dis[x][i] = dis[up[x][i - 1]][i - 1] + dis[x][i - 1];
}
v2.insert({tmp, x});
}
// for(int i = 1; i <= N; i++){
// for(int j = 0; j <= 3; j++){
// printf("up %d %d: %d\n", i, j, up[j][i]);
// }
// }
}
int minimum_jumps(int A, int B, int C, int D) {
if(st1) return C - B;
if(A == B && C == D){
B = H[B], C = H[C];
int ans = 0;
for(int i = 20; i >= 0; i--){
if(up[B][i] != 0 && up[B][i] < C){
// printf("%d ==> %d, %d\n", B, up[B][i], C);
ans += dis[B][i];
B = up[B][i];
}
}
// printf(">> %d %d\n", up[B][0], B);
if(up[B][0] != C) return -1;
return ans + dis[B][0];
}
int ans = 1000000000; A++; B++; C++; D++;
for(int i = 0; i <= N; i++) dist[i] = 1000000000;
for(auto [x, idx]: v){
if(idx >= C && idx <= D) dist[x] = 0;
if(idx >= A && idx <= B) ans = min({ans, dist[l[x]] + 1, dist[r[x]] + 1});
dist[x] = min({dist[x], dist[l[x]] + 1, dist[r[x]] + 1});
// printf(">> %d (%d, %d) : %d %d\n", x, l[x], r[x], dist[l[x]], dist[r[x]]);
}
return ans == 1000000000 ? -1 : ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
312 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
170 ms |
37612 KB |
Output is correct |
4 |
Correct |
1065 ms |
47148 KB |
Output is correct |
5 |
Correct |
798 ms |
23880 KB |
Output is correct |
6 |
Correct |
1119 ms |
47268 KB |
Output is correct |
7 |
Correct |
870 ms |
32324 KB |
Output is correct |
8 |
Correct |
1018 ms |
47260 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
336 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
0 ms |
336 KB |
Output is correct |
5 |
Incorrect |
3 ms |
336 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
336 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
0 ms |
336 KB |
Output is correct |
5 |
Incorrect |
3 ms |
336 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
208 KB |
Output is correct |
2 |
Correct |
1 ms |
208 KB |
Output is correct |
3 |
Correct |
0 ms |
208 KB |
Output is correct |
4 |
Correct |
1 ms |
208 KB |
Output is correct |
5 |
Correct |
184 ms |
38652 KB |
Output is correct |
6 |
Correct |
230 ms |
48020 KB |
Output is correct |
7 |
Correct |
106 ms |
24856 KB |
Output is correct |
8 |
Correct |
288 ms |
47988 KB |
Output is correct |
9 |
Correct |
24 ms |
7432 KB |
Output is correct |
10 |
Correct |
268 ms |
48012 KB |
Output is correct |
11 |
Correct |
149 ms |
47220 KB |
Output is correct |
12 |
Correct |
145 ms |
47736 KB |
Output is correct |
13 |
Correct |
122 ms |
47500 KB |
Output is correct |
14 |
Correct |
182 ms |
48064 KB |
Output is correct |
15 |
Correct |
148 ms |
48008 KB |
Output is correct |
16 |
Correct |
125 ms |
48032 KB |
Output is correct |
17 |
Correct |
123 ms |
48040 KB |
Output is correct |
18 |
Correct |
0 ms |
208 KB |
Output is correct |
19 |
Correct |
0 ms |
336 KB |
Output is correct |
20 |
Correct |
0 ms |
336 KB |
Output is correct |
21 |
Correct |
0 ms |
336 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
1 ms |
336 KB |
Output is correct |
25 |
Correct |
1 ms |
336 KB |
Output is correct |
26 |
Correct |
1 ms |
556 KB |
Output is correct |
27 |
Correct |
2 ms |
720 KB |
Output is correct |
28 |
Correct |
2 ms |
812 KB |
Output is correct |
29 |
Correct |
2 ms |
812 KB |
Output is correct |
30 |
Correct |
2 ms |
808 KB |
Output is correct |
31 |
Correct |
1 ms |
720 KB |
Output is correct |
32 |
Correct |
1 ms |
208 KB |
Output is correct |
33 |
Correct |
226 ms |
47904 KB |
Output is correct |
34 |
Correct |
236 ms |
48048 KB |
Output is correct |
35 |
Correct |
184 ms |
47460 KB |
Output is correct |
36 |
Correct |
206 ms |
48044 KB |
Output is correct |
37 |
Correct |
184 ms |
48048 KB |
Output is correct |
38 |
Correct |
133 ms |
47412 KB |
Output is correct |
39 |
Correct |
1 ms |
208 KB |
Output is correct |
40 |
Correct |
107 ms |
27928 KB |
Output is correct |
41 |
Correct |
267 ms |
48028 KB |
Output is correct |
42 |
Correct |
142 ms |
47380 KB |
Output is correct |
43 |
Correct |
213 ms |
48016 KB |
Output is correct |
44 |
Correct |
143 ms |
47948 KB |
Output is correct |
45 |
Incorrect |
149 ms |
47468 KB |
Output isn't correct |
46 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
1 ms |
208 KB |
Output is correct |
4 |
Incorrect |
308 ms |
22152 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
1 ms |
208 KB |
Output is correct |
4 |
Incorrect |
308 ms |
22152 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
312 KB |
Output is correct |
2 |
Correct |
0 ms |
208 KB |
Output is correct |
3 |
Correct |
170 ms |
37612 KB |
Output is correct |
4 |
Correct |
1065 ms |
47148 KB |
Output is correct |
5 |
Correct |
798 ms |
23880 KB |
Output is correct |
6 |
Correct |
1119 ms |
47268 KB |
Output is correct |
7 |
Correct |
870 ms |
32324 KB |
Output is correct |
8 |
Correct |
1018 ms |
47260 KB |
Output is correct |
9 |
Correct |
0 ms |
336 KB |
Output is correct |
10 |
Correct |
0 ms |
208 KB |
Output is correct |
11 |
Correct |
0 ms |
208 KB |
Output is correct |
12 |
Correct |
0 ms |
336 KB |
Output is correct |
13 |
Incorrect |
3 ms |
336 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |