#include "jumps.h"
#include <bits/stdc++.h>
using namespace std;
#define all(x) begin(x), end(x)
const int logn = 19, N = 200001;
int h[N], jump[logn][N], R[N], L[N], spt[logn][N], n, jmp[logn][N];
const int infI = 1e9 + 7;
bool okk = true;
int Min(int i, int j) {
return h[i] < h[j] ? i : j;
}
int Max(int i, int j) {
return h[i] > h[j] ? i : j;
}
int get_max(int l, int r) {
if (r <= l) return -1;
int sz = __lg(r - l);
return Max(spt[sz][l], spt[sz][r - (1 << sz)]);
}
void init(int nn, vector<int> H) {
n = nn;
for (int i = 0; i < n; ++i) {
h[i] = H[i];
okk &= (H[i] == i + 1);
}
vector<int> st;
for (int i = 0; i < n; ++i) {
while (!st.empty() && h[st.back()] < h[i]) {
R[st.back()] = i;
st.pop_back();
}
if (st.empty()) {
L[i] = -1;
} else {
L[i] = st.back();
}
st.push_back(i);
}
for (int i: st) {
R[i] = n;
}
st.clear();
for (int i = 0; i < n; ++i) {
if (R[i] == n)
jump[0][i] = L[i];
else if (L[i] == -1)
jump[0][i] = R[i];
else
jump[0][i] = Max(L[i], R[i]);
jmp[0][i] = R[i];
spt[0][i] = i;
}
jmp[0][n] = n;
jump[0][n] = -1;
for (int j = 1; j < logn; ++j) {
for (int i = 0; i <= n; ++i) {
if (jump[j - 1][i] != -1)
jump[j][i] = jump[j - 1][jump[j - 1][i]];
else
jump[j][i] = -1;
jmp[j][i] = jmp[j - 1][jmp[j - 1][i]];
}
}
for (int j = 1; j < logn; ++j) {
for (int i = 0; i + (1 << j) <= n; ++i) {
spt[j][i] = Max(spt[j - 1][i], spt[j - 1][i + (1 << (j - 1))]);
}
}
}
int minimum_jumps(int A, int B, int C, int D) {
if (okk) {
return C - B;
}
++D, ++B;
int mxcd = get_max(C, D);
int lx = A - 1, rx = C;
while (lx + 1 < rx) {
int m = (lx + rx) >> 1;
if (h[get_max(m, C)] < h[mxcd]) rx = m;
else lx = m;
}
if (rx >= B) {
return -1;
}
int i = get_max(rx, B);
int ans = infI;
int nw = 0;
for (int j = logn - 1; j > -1; --j) {
if (jump[j][i] == -1) continue;
if (jump[j][i] >= C && jump[j][i] < D) {
ans = min(ans, nw + (1 << j));
} else if (jump[j][i] >= h[C] && h[jump[j][i]] < h[mxcd]) {
ans = min(ans, nw + (1 << j) + 1);
}
if (h[jump[j][i]] < h[C]) {
nw += (1 << j);
i = jump[j][i];
}
}
assert(L[i] != C);
assert(i < C);
if (R[i] >= C && R[i] < D) {
return nw + 1;
} else if (L[i] != -1 && h[L[i]] < h[mxcd]) {
assert(h[L[i]] >= h[C]);
return nw + 2;
} else {
for (int j = logn - 1; j > -1; --j) {
if (jmp[j][i] < C) {
nw += (1 << j);
i = jmp[j][i];
}
}
assert(R[i] >= C && R[i] < D);
return nw + 1;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
130 ms |
37408 KB |
Output is correct |
4 |
Correct |
867 ms |
47000 KB |
Output is correct |
5 |
Correct |
718 ms |
23588 KB |
Output is correct |
6 |
Correct |
733 ms |
47048 KB |
Output is correct |
7 |
Correct |
715 ms |
32032 KB |
Output is correct |
8 |
Correct |
754 ms |
47012 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
1 ms |
464 KB |
Output is correct |
5 |
Incorrect |
1 ms |
464 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
1 ms |
464 KB |
Output is correct |
5 |
Incorrect |
1 ms |
464 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
0 ms |
464 KB |
Output is correct |
5 |
Correct |
38 ms |
37924 KB |
Output is correct |
6 |
Correct |
49 ms |
46980 KB |
Output is correct |
7 |
Correct |
26 ms |
23972 KB |
Output is correct |
8 |
Correct |
50 ms |
47004 KB |
Output is correct |
9 |
Correct |
9 ms |
7248 KB |
Output is correct |
10 |
Correct |
66 ms |
46920 KB |
Output is correct |
11 |
Correct |
44 ms |
46996 KB |
Output is correct |
12 |
Correct |
44 ms |
47048 KB |
Output is correct |
13 |
Correct |
44 ms |
47032 KB |
Output is correct |
14 |
Correct |
50 ms |
46996 KB |
Output is correct |
15 |
Correct |
57 ms |
47528 KB |
Output is correct |
16 |
Correct |
43 ms |
47892 KB |
Output is correct |
17 |
Correct |
60 ms |
47788 KB |
Output is correct |
18 |
Correct |
0 ms |
464 KB |
Output is correct |
19 |
Correct |
1 ms |
592 KB |
Output is correct |
20 |
Correct |
1 ms |
592 KB |
Output is correct |
21 |
Correct |
1 ms |
592 KB |
Output is correct |
22 |
Correct |
1 ms |
592 KB |
Output is correct |
23 |
Correct |
1 ms |
592 KB |
Output is correct |
24 |
Correct |
1 ms |
592 KB |
Output is correct |
25 |
Correct |
1 ms |
592 KB |
Output is correct |
26 |
Correct |
1 ms |
720 KB |
Output is correct |
27 |
Correct |
1 ms |
976 KB |
Output is correct |
28 |
Correct |
1 ms |
976 KB |
Output is correct |
29 |
Correct |
1 ms |
976 KB |
Output is correct |
30 |
Correct |
1 ms |
976 KB |
Output is correct |
31 |
Correct |
1 ms |
976 KB |
Output is correct |
32 |
Correct |
0 ms |
464 KB |
Output is correct |
33 |
Correct |
62 ms |
47028 KB |
Output is correct |
34 |
Correct |
62 ms |
47036 KB |
Output is correct |
35 |
Correct |
58 ms |
46920 KB |
Output is correct |
36 |
Correct |
50 ms |
47008 KB |
Output is correct |
37 |
Correct |
59 ms |
47528 KB |
Output is correct |
38 |
Correct |
45 ms |
47932 KB |
Output is correct |
39 |
Correct |
0 ms |
464 KB |
Output is correct |
40 |
Correct |
27 ms |
27208 KB |
Output is correct |
41 |
Correct |
46 ms |
46992 KB |
Output is correct |
42 |
Correct |
43 ms |
47032 KB |
Output is correct |
43 |
Correct |
51 ms |
47024 KB |
Output is correct |
44 |
Correct |
48 ms |
47548 KB |
Output is correct |
45 |
Correct |
50 ms |
47900 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
251 ms |
21464 KB |
Output is correct |
5 |
Correct |
886 ms |
47008 KB |
Output is correct |
6 |
Correct |
682 ms |
7868 KB |
Output is correct |
7 |
Correct |
789 ms |
47012 KB |
Output is correct |
8 |
Correct |
536 ms |
16168 KB |
Output is correct |
9 |
Correct |
662 ms |
47040 KB |
Output is correct |
10 |
Correct |
810 ms |
47016 KB |
Output is correct |
11 |
Correct |
1054 ms |
46980 KB |
Output is correct |
12 |
Correct |
1022 ms |
47028 KB |
Output is correct |
13 |
Correct |
810 ms |
46928 KB |
Output is correct |
14 |
Correct |
1065 ms |
47504 KB |
Output is correct |
15 |
Correct |
960 ms |
47848 KB |
Output is correct |
16 |
Correct |
872 ms |
47920 KB |
Output is correct |
17 |
Correct |
0 ms |
464 KB |
Output is correct |
18 |
Correct |
0 ms |
464 KB |
Output is correct |
19 |
Correct |
2 ms |
464 KB |
Output is correct |
20 |
Correct |
3 ms |
592 KB |
Output is correct |
21 |
Correct |
2 ms |
592 KB |
Output is correct |
22 |
Correct |
4 ms |
592 KB |
Output is correct |
23 |
Correct |
3 ms |
592 KB |
Output is correct |
24 |
Correct |
2 ms |
592 KB |
Output is correct |
25 |
Correct |
1 ms |
592 KB |
Output is correct |
26 |
Correct |
1 ms |
720 KB |
Output is correct |
27 |
Correct |
19 ms |
976 KB |
Output is correct |
28 |
Correct |
20 ms |
976 KB |
Output is correct |
29 |
Correct |
18 ms |
976 KB |
Output is correct |
30 |
Correct |
20 ms |
976 KB |
Output is correct |
31 |
Correct |
20 ms |
976 KB |
Output is correct |
32 |
Correct |
0 ms |
464 KB |
Output is correct |
33 |
Correct |
36 ms |
27120 KB |
Output is correct |
34 |
Correct |
47 ms |
47012 KB |
Output is correct |
35 |
Correct |
47 ms |
47008 KB |
Output is correct |
36 |
Correct |
51 ms |
47004 KB |
Output is correct |
37 |
Correct |
47 ms |
47500 KB |
Output is correct |
38 |
Correct |
49 ms |
47896 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
251 ms |
21464 KB |
Output is correct |
5 |
Correct |
886 ms |
47008 KB |
Output is correct |
6 |
Correct |
682 ms |
7868 KB |
Output is correct |
7 |
Correct |
789 ms |
47012 KB |
Output is correct |
8 |
Correct |
536 ms |
16168 KB |
Output is correct |
9 |
Correct |
662 ms |
47040 KB |
Output is correct |
10 |
Correct |
810 ms |
47016 KB |
Output is correct |
11 |
Correct |
1054 ms |
46980 KB |
Output is correct |
12 |
Correct |
1022 ms |
47028 KB |
Output is correct |
13 |
Correct |
810 ms |
46928 KB |
Output is correct |
14 |
Correct |
1065 ms |
47504 KB |
Output is correct |
15 |
Correct |
960 ms |
47848 KB |
Output is correct |
16 |
Correct |
872 ms |
47920 KB |
Output is correct |
17 |
Correct |
0 ms |
464 KB |
Output is correct |
18 |
Correct |
0 ms |
464 KB |
Output is correct |
19 |
Correct |
2 ms |
464 KB |
Output is correct |
20 |
Correct |
3 ms |
592 KB |
Output is correct |
21 |
Correct |
2 ms |
592 KB |
Output is correct |
22 |
Correct |
4 ms |
592 KB |
Output is correct |
23 |
Correct |
3 ms |
592 KB |
Output is correct |
24 |
Correct |
2 ms |
592 KB |
Output is correct |
25 |
Correct |
1 ms |
592 KB |
Output is correct |
26 |
Correct |
1 ms |
720 KB |
Output is correct |
27 |
Correct |
19 ms |
976 KB |
Output is correct |
28 |
Correct |
20 ms |
976 KB |
Output is correct |
29 |
Correct |
18 ms |
976 KB |
Output is correct |
30 |
Correct |
20 ms |
976 KB |
Output is correct |
31 |
Correct |
20 ms |
976 KB |
Output is correct |
32 |
Correct |
0 ms |
464 KB |
Output is correct |
33 |
Correct |
36 ms |
27120 KB |
Output is correct |
34 |
Correct |
47 ms |
47012 KB |
Output is correct |
35 |
Correct |
47 ms |
47008 KB |
Output is correct |
36 |
Correct |
51 ms |
47004 KB |
Output is correct |
37 |
Correct |
47 ms |
47500 KB |
Output is correct |
38 |
Correct |
49 ms |
47896 KB |
Output is correct |
39 |
Correct |
0 ms |
464 KB |
Output is correct |
40 |
Correct |
0 ms |
464 KB |
Output is correct |
41 |
Correct |
1 ms |
464 KB |
Output is correct |
42 |
Correct |
227 ms |
21468 KB |
Output is correct |
43 |
Correct |
856 ms |
47032 KB |
Output is correct |
44 |
Correct |
654 ms |
7888 KB |
Output is correct |
45 |
Correct |
916 ms |
47000 KB |
Output is correct |
46 |
Correct |
482 ms |
16208 KB |
Output is correct |
47 |
Correct |
910 ms |
47064 KB |
Output is correct |
48 |
Correct |
912 ms |
47028 KB |
Output is correct |
49 |
Correct |
954 ms |
47028 KB |
Output is correct |
50 |
Correct |
1020 ms |
47016 KB |
Output is correct |
51 |
Correct |
997 ms |
47032 KB |
Output is correct |
52 |
Correct |
1251 ms |
47500 KB |
Output is correct |
53 |
Correct |
936 ms |
47952 KB |
Output is correct |
54 |
Correct |
904 ms |
47920 KB |
Output is correct |
55 |
Correct |
1 ms |
464 KB |
Output is correct |
56 |
Correct |
108 ms |
47012 KB |
Output is correct |
57 |
Correct |
796 ms |
46996 KB |
Output is correct |
58 |
Correct |
480 ms |
8400 KB |
Output is correct |
59 |
Correct |
946 ms |
46960 KB |
Output is correct |
60 |
Correct |
386 ms |
16688 KB |
Output is correct |
61 |
Correct |
723 ms |
47008 KB |
Output is correct |
62 |
Correct |
804 ms |
47012 KB |
Output is correct |
63 |
Correct |
1080 ms |
47040 KB |
Output is correct |
64 |
Correct |
1025 ms |
46968 KB |
Output is correct |
65 |
Correct |
740 ms |
47032 KB |
Output is correct |
66 |
Correct |
1004 ms |
47484 KB |
Output is correct |
67 |
Correct |
887 ms |
47928 KB |
Output is correct |
68 |
Correct |
805 ms |
47932 KB |
Output is correct |
69 |
Correct |
1 ms |
464 KB |
Output is correct |
70 |
Correct |
1 ms |
464 KB |
Output is correct |
71 |
Correct |
3 ms |
592 KB |
Output is correct |
72 |
Correct |
3 ms |
592 KB |
Output is correct |
73 |
Correct |
2 ms |
592 KB |
Output is correct |
74 |
Correct |
2 ms |
592 KB |
Output is correct |
75 |
Correct |
4 ms |
592 KB |
Output is correct |
76 |
Correct |
0 ms |
464 KB |
Output is correct |
77 |
Correct |
0 ms |
464 KB |
Output is correct |
78 |
Correct |
2 ms |
464 KB |
Output is correct |
79 |
Correct |
2 ms |
592 KB |
Output is correct |
80 |
Correct |
2 ms |
592 KB |
Output is correct |
81 |
Correct |
3 ms |
592 KB |
Output is correct |
82 |
Correct |
2 ms |
592 KB |
Output is correct |
83 |
Correct |
2 ms |
592 KB |
Output is correct |
84 |
Correct |
1 ms |
592 KB |
Output is correct |
85 |
Correct |
4 ms |
592 KB |
Output is correct |
86 |
Correct |
17 ms |
976 KB |
Output is correct |
87 |
Correct |
15 ms |
976 KB |
Output is correct |
88 |
Correct |
18 ms |
976 KB |
Output is correct |
89 |
Correct |
10 ms |
1088 KB |
Output is correct |
90 |
Correct |
23 ms |
976 KB |
Output is correct |
91 |
Correct |
1 ms |
592 KB |
Output is correct |
92 |
Correct |
1 ms |
720 KB |
Output is correct |
93 |
Correct |
18 ms |
976 KB |
Output is correct |
94 |
Correct |
16 ms |
976 KB |
Output is correct |
95 |
Correct |
16 ms |
976 KB |
Output is correct |
96 |
Correct |
18 ms |
976 KB |
Output is correct |
97 |
Correct |
16 ms |
976 KB |
Output is correct |
98 |
Correct |
1 ms |
464 KB |
Output is correct |
99 |
Correct |
49 ms |
46984 KB |
Output is correct |
100 |
Correct |
50 ms |
46960 KB |
Output is correct |
101 |
Correct |
58 ms |
47000 KB |
Output is correct |
102 |
Correct |
47 ms |
47048 KB |
Output is correct |
103 |
Correct |
46 ms |
47532 KB |
Output is correct |
104 |
Correct |
45 ms |
47892 KB |
Output is correct |
105 |
Correct |
1 ms |
464 KB |
Output is correct |
106 |
Correct |
36 ms |
27208 KB |
Output is correct |
107 |
Correct |
58 ms |
47024 KB |
Output is correct |
108 |
Correct |
47 ms |
47028 KB |
Output is correct |
109 |
Correct |
47 ms |
47008 KB |
Output is correct |
110 |
Correct |
49 ms |
47476 KB |
Output is correct |
111 |
Correct |
45 ms |
47932 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
464 KB |
Output is correct |
2 |
Correct |
0 ms |
464 KB |
Output is correct |
3 |
Correct |
130 ms |
37408 KB |
Output is correct |
4 |
Correct |
867 ms |
47000 KB |
Output is correct |
5 |
Correct |
718 ms |
23588 KB |
Output is correct |
6 |
Correct |
733 ms |
47048 KB |
Output is correct |
7 |
Correct |
715 ms |
32032 KB |
Output is correct |
8 |
Correct |
754 ms |
47012 KB |
Output is correct |
9 |
Correct |
1 ms |
464 KB |
Output is correct |
10 |
Correct |
0 ms |
464 KB |
Output is correct |
11 |
Correct |
0 ms |
464 KB |
Output is correct |
12 |
Correct |
1 ms |
464 KB |
Output is correct |
13 |
Incorrect |
1 ms |
464 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |