#include "jumps.h"
using namespace std;
#include <bits/stdc++.h>
bool sb1 = true;
int n, dp[200005], ad[200005], a[200005];
int nxup[200005],nxls[200005],lsup[200005];
void init(int N, std::vector<int> H) {
n = N;
for(int i=0;i<n;++i) a[i] = H[i];
for(int i=1;i<n;++i){
if(a[i] < a[i-1]) sb1 = false;
}
vector<pair<int,int>> v;
for(int i=0;i<n;++i){
v.push_back({H[i],i});
}
sort(v.begin(),v.end(),greater<pair<int,int>>());
for(int i=0;i<n;++i) nxup[i] = nxls[i] = lsup[i] = -1;
set<int> s;
for(int i=0;i<n;++i) {
if(!s.empty()){
set<int>::iterator it= s.upper_bound(v[i].second);
if(it != s.end()){
nxup[v[i].second] = *it;
}
if(it != s.begin()){
--it;
lsup[v[i].second] = *it;
}
}
s.insert(v[i].second);
}
}
int minimum_jumps(int A, int B, int C, int D) {
if(sb1) return C - B;
if(A == B && C == D) {
if(a[C] < a[B]) return -1;
int res = 0;
for(int cn = 0;;++cn){
if(cn > 2 *n) {
int vr = 5 / 0;
return vr;
}
if(B == C) break;
if(nxup[B] == -1 || B > C || B == -1) {res = -1; break;}
++res;
int ls = lsup[B],nx = nxup[B];
if(ls != -1) {
if(a[ls] > a[nx] && a[ls] < a[C]) B = ls;
else B = nx;
}
else B = nx;
}
return res;
}
int res = 1e9;
for(int i= C;i <= D; ++i) dp[i] = 0;
for(int i = A;i <= B; ++i) ad[i] = 0;
for(int i=0;i < A; ++i) ad[i] = 1e9;
for(int i=C-1;i>=0;i--){
int nx = nxup[i];
if(nx > D) dp[i] = 1e9;
else dp[i] = dp[nx] + 1;
if(i >= A && i <= B){
res = min(res,dp[i]);
}
int ls = lsup[i];
if(ls != -1){
ad[ls] = min(ad[ls], ad[i] + 1);
}
else if(i< A){
res = min(res,dp[i] + ad[i]);
}
}
if(res >= 1e9) return -1;
return res;
}
/*
8 5
3 2 1 7 4 5 6 8
4 4 7 7
1 3 5 6
0 1 2 2
2 2 7 7
1 1 5 5
*/
Compilation message
jumps.cpp: In function 'int minimum_jumps(int, int, int, int)':
jumps.cpp:45:28: warning: division by zero [-Wdiv-by-zero]
45 | int vr = 5 / 0;
| ~~^~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
102 ms |
14616 KB |
Output is correct |
4 |
Correct |
667 ms |
17124 KB |
Output is correct |
5 |
Correct |
507 ms |
10864 KB |
Output is correct |
6 |
Correct |
595 ms |
17080 KB |
Output is correct |
7 |
Correct |
503 ms |
13128 KB |
Output is correct |
8 |
Correct |
602 ms |
17200 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Incorrect |
2 ms |
4540 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Incorrect |
2 ms |
4540 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
92 ms |
14628 KB |
Output is correct |
6 |
Incorrect |
117 ms |
17196 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
170 ms |
10384 KB |
Output is correct |
5 |
Correct |
715 ms |
17012 KB |
Output is correct |
6 |
Correct |
373 ms |
6608 KB |
Output is correct |
7 |
Correct |
656 ms |
17204 KB |
Output is correct |
8 |
Correct |
369 ms |
8900 KB |
Output is correct |
9 |
Correct |
660 ms |
17056 KB |
Output is correct |
10 |
Correct |
636 ms |
17208 KB |
Output is correct |
11 |
Execution timed out |
4008 ms |
17088 KB |
Time limit exceeded |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4440 KB |
Output is correct |
4 |
Correct |
170 ms |
10384 KB |
Output is correct |
5 |
Correct |
715 ms |
17012 KB |
Output is correct |
6 |
Correct |
373 ms |
6608 KB |
Output is correct |
7 |
Correct |
656 ms |
17204 KB |
Output is correct |
8 |
Correct |
369 ms |
8900 KB |
Output is correct |
9 |
Correct |
660 ms |
17056 KB |
Output is correct |
10 |
Correct |
636 ms |
17208 KB |
Output is correct |
11 |
Execution timed out |
4008 ms |
17088 KB |
Time limit exceeded |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
102 ms |
14616 KB |
Output is correct |
4 |
Correct |
667 ms |
17124 KB |
Output is correct |
5 |
Correct |
507 ms |
10864 KB |
Output is correct |
6 |
Correct |
595 ms |
17080 KB |
Output is correct |
7 |
Correct |
503 ms |
13128 KB |
Output is correct |
8 |
Correct |
602 ms |
17200 KB |
Output is correct |
9 |
Correct |
1 ms |
4440 KB |
Output is correct |
10 |
Correct |
1 ms |
4440 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4440 KB |
Output is correct |
13 |
Incorrect |
2 ms |
4540 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |