#include "jumps.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
const int MAX=2e5+5;
int Lg[MAX],J[MAX][20],JR[MAX][20];
ii f[MAX][20];
ii query(int l,int r) {
int k=Lg[r-l+1];
return max(f[l][k],f[r-(1<<k)+1][k]);
}
void init(int N, std::vector<int> H) {
// Init log
for(int i=1;i<=N;i++)
Lg[i]=log2(i);
// Init RMQ
for(int i=0;i<N;i++)
f[i][0]=ii(H[i],i);
for(int k=1;(1<<k)<=N;k++)
for(int i=0;i+(1<<k)-1<N;i++)
f[i][k]=max(f[i][k-1],f[i+(1<<(k-1))][k-1]);
vector<int> L(N),R(N);
// Init left
for(int i=0; i<N;i++) {
int tmp=i-1;
while(tmp>=0&&H[tmp]<=H[i])
tmp=L[tmp];
L[i]=tmp;
}
// Init right
for(int i=N-1; i>=0;i--) {
int tmp=i+1;
while(tmp<N&&H[tmp]<=H[i])
tmp=R[tmp];
R[i]=tmp;
}
// Init jumps RMQ
for(int i=0;i<N;i++) {
if(L[i]==-1&&R[i]==N)
J[i][0]=-1;
else if(L[i]==-1)
J[i][0]=R[i];
else if(R[i]==N)
J[i][0]=L[i];
else if(H[L[i]]>H[R[i]])
J[i][0]=L[i];
else
J[i][0]=R[i];
}
for(int k=1;k<20;k++)
for(int i=0;i<N;i++)
if(J[i][k-1]==-1)
J[i][k]=-1;
else
J[i][k]=J[J[i][k-1]][k-1];
// Init jumps right RMQ
for(int i=0;i<N;i++)
JR[i][0]=R[i];
for(int k=1;k<20;k++)
for(int i=0;i<N;i++)
if(JR[i][k-1]==N)
JR[i][k]=N;
else
JR[i][k]=JR[JR[i][k-1]][k-1];
}
int minimum_jumps(int A, int B, int C, int D) {
// Special cases
ii maxBC=query(B+1,C-1),maxCD=query(C,D);
if(f[B][0].first>=maxCD.first)
return -1;
if(B+1==C)
return 1;
if(maxBC.first>=maxCD.first)
return -1;
// Find the starting position
int pos=B;
for(int i=19;i>=0;i--) {
if((1<<i)>pos-A+1||f[pos-(1<<i)+1][i].first>=maxCD.first)
continue;
pos=pos-(1<<i)+1;
}
pos=query(pos,B).second;
// RMQ jumps
int rs=0;
for(int i=19;i>=0;i--) {
if(J[pos][i]==-1||f[J[pos][i]][0].first>=maxBC.first)
continue;
pos=J[pos][i];
rs+=(1<<i);
}
if(J[pos][0]!=-1&&f[J[pos][0]][0].first<maxCD.first)
return rs+2;
// RMQ jumps right
for(int i=19;i>=0;i--)
if(JR[pos][i]<C) {
rs+=(1<<i);
pos=JR[pos][i];
}
return rs+1;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
200 KB |
Output is correct |
2 |
Correct |
1 ms |
200 KB |
Output is correct |
3 |
Correct |
332 ms |
53264 KB |
Output is correct |
4 |
Correct |
1616 ms |
66824 KB |
Output is correct |
5 |
Correct |
1303 ms |
33696 KB |
Output is correct |
6 |
Correct |
1718 ms |
66720 KB |
Output is correct |
7 |
Correct |
1134 ms |
45680 KB |
Output is correct |
8 |
Correct |
1522 ms |
66752 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
200 KB |
Output is correct |
2 |
Correct |
0 ms |
200 KB |
Output is correct |
3 |
Correct |
0 ms |
200 KB |
Output is correct |
4 |
Correct |
0 ms |
200 KB |
Output is correct |
5 |
Incorrect |
2 ms |
200 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
200 KB |
Output is correct |
2 |
Correct |
0 ms |
200 KB |
Output is correct |
3 |
Correct |
0 ms |
200 KB |
Output is correct |
4 |
Correct |
0 ms |
200 KB |
Output is correct |
5 |
Incorrect |
2 ms |
200 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
200 KB |
Output is correct |
2 |
Correct |
0 ms |
200 KB |
Output is correct |
3 |
Correct |
0 ms |
200 KB |
Output is correct |
4 |
Correct |
1 ms |
200 KB |
Output is correct |
5 |
Correct |
173 ms |
53908 KB |
Output is correct |
6 |
Correct |
196 ms |
66704 KB |
Output is correct |
7 |
Correct |
82 ms |
34244 KB |
Output is correct |
8 |
Correct |
203 ms |
66848 KB |
Output is correct |
9 |
Correct |
15 ms |
10264 KB |
Output is correct |
10 |
Correct |
209 ms |
66716 KB |
Output is correct |
11 |
Correct |
191 ms |
66932 KB |
Output is correct |
12 |
Incorrect |
209 ms |
66732 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
200 KB |
Output is correct |
2 |
Correct |
0 ms |
200 KB |
Output is correct |
3 |
Correct |
1 ms |
200 KB |
Output is correct |
4 |
Correct |
293 ms |
30616 KB |
Output is correct |
5 |
Correct |
1225 ms |
66720 KB |
Output is correct |
6 |
Correct |
789 ms |
11288 KB |
Output is correct |
7 |
Correct |
1172 ms |
66948 KB |
Output is correct |
8 |
Correct |
710 ms |
23100 KB |
Output is correct |
9 |
Correct |
1205 ms |
66756 KB |
Output is correct |
10 |
Correct |
1505 ms |
66752 KB |
Output is correct |
11 |
Correct |
1312 ms |
66716 KB |
Output is correct |
12 |
Correct |
1338 ms |
66788 KB |
Output is correct |
13 |
Correct |
1141 ms |
66732 KB |
Output is correct |
14 |
Correct |
1315 ms |
66716 KB |
Output is correct |
15 |
Correct |
1265 ms |
66752 KB |
Output is correct |
16 |
Correct |
1133 ms |
66828 KB |
Output is correct |
17 |
Correct |
1 ms |
200 KB |
Output is correct |
18 |
Correct |
1 ms |
200 KB |
Output is correct |
19 |
Correct |
3 ms |
200 KB |
Output is correct |
20 |
Correct |
3 ms |
328 KB |
Output is correct |
21 |
Correct |
3 ms |
328 KB |
Output is correct |
22 |
Correct |
2 ms |
328 KB |
Output is correct |
23 |
Correct |
3 ms |
328 KB |
Output is correct |
24 |
Correct |
3 ms |
328 KB |
Output is correct |
25 |
Correct |
1 ms |
328 KB |
Output is correct |
26 |
Correct |
2 ms |
456 KB |
Output is correct |
27 |
Correct |
11 ms |
968 KB |
Output is correct |
28 |
Correct |
18 ms |
968 KB |
Output is correct |
29 |
Correct |
24 ms |
968 KB |
Output is correct |
30 |
Correct |
28 ms |
968 KB |
Output is correct |
31 |
Correct |
21 ms |
968 KB |
Output is correct |
32 |
Correct |
1 ms |
200 KB |
Output is correct |
33 |
Correct |
102 ms |
38724 KB |
Output is correct |
34 |
Correct |
207 ms |
66828 KB |
Output is correct |
35 |
Correct |
195 ms |
66716 KB |
Output is correct |
36 |
Correct |
195 ms |
66752 KB |
Output is correct |
37 |
Correct |
197 ms |
66752 KB |
Output is correct |
38 |
Correct |
190 ms |
66732 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
200 KB |
Output is correct |
2 |
Correct |
0 ms |
200 KB |
Output is correct |
3 |
Correct |
1 ms |
200 KB |
Output is correct |
4 |
Correct |
293 ms |
30616 KB |
Output is correct |
5 |
Correct |
1225 ms |
66720 KB |
Output is correct |
6 |
Correct |
789 ms |
11288 KB |
Output is correct |
7 |
Correct |
1172 ms |
66948 KB |
Output is correct |
8 |
Correct |
710 ms |
23100 KB |
Output is correct |
9 |
Correct |
1205 ms |
66756 KB |
Output is correct |
10 |
Correct |
1505 ms |
66752 KB |
Output is correct |
11 |
Correct |
1312 ms |
66716 KB |
Output is correct |
12 |
Correct |
1338 ms |
66788 KB |
Output is correct |
13 |
Correct |
1141 ms |
66732 KB |
Output is correct |
14 |
Correct |
1315 ms |
66716 KB |
Output is correct |
15 |
Correct |
1265 ms |
66752 KB |
Output is correct |
16 |
Correct |
1133 ms |
66828 KB |
Output is correct |
17 |
Correct |
1 ms |
200 KB |
Output is correct |
18 |
Correct |
1 ms |
200 KB |
Output is correct |
19 |
Correct |
3 ms |
200 KB |
Output is correct |
20 |
Correct |
3 ms |
328 KB |
Output is correct |
21 |
Correct |
3 ms |
328 KB |
Output is correct |
22 |
Correct |
2 ms |
328 KB |
Output is correct |
23 |
Correct |
3 ms |
328 KB |
Output is correct |
24 |
Correct |
3 ms |
328 KB |
Output is correct |
25 |
Correct |
1 ms |
328 KB |
Output is correct |
26 |
Correct |
2 ms |
456 KB |
Output is correct |
27 |
Correct |
11 ms |
968 KB |
Output is correct |
28 |
Correct |
18 ms |
968 KB |
Output is correct |
29 |
Correct |
24 ms |
968 KB |
Output is correct |
30 |
Correct |
28 ms |
968 KB |
Output is correct |
31 |
Correct |
21 ms |
968 KB |
Output is correct |
32 |
Correct |
1 ms |
200 KB |
Output is correct |
33 |
Correct |
102 ms |
38724 KB |
Output is correct |
34 |
Correct |
207 ms |
66828 KB |
Output is correct |
35 |
Correct |
195 ms |
66716 KB |
Output is correct |
36 |
Correct |
195 ms |
66752 KB |
Output is correct |
37 |
Correct |
197 ms |
66752 KB |
Output is correct |
38 |
Correct |
190 ms |
66732 KB |
Output is correct |
39 |
Correct |
0 ms |
200 KB |
Output is correct |
40 |
Correct |
0 ms |
200 KB |
Output is correct |
41 |
Correct |
0 ms |
200 KB |
Output is correct |
42 |
Correct |
333 ms |
30608 KB |
Output is correct |
43 |
Correct |
1133 ms |
66844 KB |
Output is correct |
44 |
Correct |
633 ms |
11248 KB |
Output is correct |
45 |
Correct |
1137 ms |
66712 KB |
Output is correct |
46 |
Correct |
614 ms |
23104 KB |
Output is correct |
47 |
Correct |
1123 ms |
66756 KB |
Output is correct |
48 |
Correct |
1474 ms |
66748 KB |
Output is correct |
49 |
Correct |
1226 ms |
66712 KB |
Output is correct |
50 |
Correct |
1450 ms |
66712 KB |
Output is correct |
51 |
Correct |
1058 ms |
66992 KB |
Output is correct |
52 |
Correct |
1322 ms |
66796 KB |
Output is correct |
53 |
Correct |
1167 ms |
66752 KB |
Output is correct |
54 |
Correct |
1093 ms |
66784 KB |
Output is correct |
55 |
Correct |
1 ms |
200 KB |
Output is correct |
56 |
Correct |
225 ms |
66448 KB |
Output is correct |
57 |
Correct |
1137 ms |
66880 KB |
Output is correct |
58 |
Incorrect |
502 ms |
11968 KB |
Output isn't correct |
59 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
200 KB |
Output is correct |
2 |
Correct |
1 ms |
200 KB |
Output is correct |
3 |
Correct |
332 ms |
53264 KB |
Output is correct |
4 |
Correct |
1616 ms |
66824 KB |
Output is correct |
5 |
Correct |
1303 ms |
33696 KB |
Output is correct |
6 |
Correct |
1718 ms |
66720 KB |
Output is correct |
7 |
Correct |
1134 ms |
45680 KB |
Output is correct |
8 |
Correct |
1522 ms |
66752 KB |
Output is correct |
9 |
Correct |
0 ms |
200 KB |
Output is correct |
10 |
Correct |
0 ms |
200 KB |
Output is correct |
11 |
Correct |
0 ms |
200 KB |
Output is correct |
12 |
Correct |
0 ms |
200 KB |
Output is correct |
13 |
Incorrect |
2 ms |
200 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |