#include "books.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
void extend(int &l, int &r, vector<int>&C, vector<int>&L, vector<int>&R) {
int ll = l, rr = r;
for (int i = l ; i <= min(r, l + 10) ; ++ i) ll = min(ll, L[C[i]]), rr = max(rr, R[C[i]]);
for (int i = max(l, r - 10) ; i <= r ; ++ i) ll = min(ll, L[C[i]]), rr = max(rr, R[C[i]]);
while (ll != l || rr != r) {
while (ll < l) {
--l;
ll = min(ll, L[C[l]]);
rr = max(rr, R[C[l]]);
}
while (rr > r) {
++r;
ll = min(ll, L[C[r]]);
rr = max(rr, R[C[r]]);
}
}
}
ll solve(int l, int r, int needl, int needr, vector<int>&C, vector<int>&L, vector<int>&R) {
extend(l, r, C, L, R);
if (needl == l && r == needr) return 0ll;
int l_l = l, r_l = r; ll c_l = 0;
while (true) {
if (l_l <= needl) break;
if (r_l > r) break;
c_l += 2;
--l_l;
extend(l_l, r_l, C, L, R);
}
int l_r = l, r_r = r; ll c_r = 0;
while (true) {
if (r_r >= needr) break;
if (l_r < l) break;
c_r += 2;
++r_r;
extend(l_r, r_r, C, L, R);
}
assert((l_r < l) == (r_l > r));
ll res = 0;
if (l_r < l) res = min(c_l, c_r);
else res = c_l + c_r;
int tl = min(l_l, l_r);
int tr = max(r_l, r_r);
res += solve(tl, tr, needl, needr, C, L, R);
//cerr << l << " " << r << " " << needl << " " << needr << " " << res << "\n";
return res;
}
ll minimum_walk(vector<int> p, int s) {
int n = p.size();
vector<int>C(n, -1), L(n), R(n);
int l = s, r = s;
ll essential = 0;
for (int i = 0 ; i < n ; ++ i) {
essential += abs(i - p[i]);
if (C[i] == -1) {
L[i] = i;
R[i] = i;
int j = i;
do {
R[i] = max(R[i], j);
C[j] = i;
j = p[j];
} while (i != j);
}
if (p[i] != i) l = min(l, i), r = max(r, i);
}
return solve(s, s, l, r, C, L, R) + essential;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
2 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
1 ms |
204 KB |
Output is correct |
| 28 |
Correct |
1 ms |
204 KB |
Output is correct |
| 29 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
2 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
1 ms |
204 KB |
Output is correct |
| 28 |
Correct |
1 ms |
204 KB |
Output is correct |
| 29 |
Correct |
1 ms |
204 KB |
Output is correct |
| 30 |
Correct |
232 ms |
19868 KB |
Output is correct |
| 31 |
Correct |
257 ms |
19856 KB |
Output is correct |
| 32 |
Correct |
124 ms |
19816 KB |
Output is correct |
| 33 |
Correct |
167 ms |
19852 KB |
Output is correct |
| 34 |
Correct |
184 ms |
26604 KB |
Output is correct |
| 35 |
Correct |
178 ms |
26604 KB |
Output is correct |
| 36 |
Correct |
150 ms |
26584 KB |
Output is correct |
| 37 |
Correct |
147 ms |
26592 KB |
Output is correct |
| 38 |
Correct |
146 ms |
26596 KB |
Output is correct |
| 39 |
Correct |
142 ms |
26592 KB |
Output is correct |
| 40 |
Correct |
145 ms |
26596 KB |
Output is correct |
| 41 |
Correct |
158 ms |
26692 KB |
Output is correct |
| 42 |
Correct |
170 ms |
26592 KB |
Output is correct |
| 43 |
Correct |
138 ms |
26564 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
296 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
2 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
2 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
1 ms |
204 KB |
Output is correct |
| 28 |
Correct |
1 ms |
204 KB |
Output is correct |
| 29 |
Correct |
1 ms |
204 KB |
Output is correct |
| 30 |
Correct |
232 ms |
19868 KB |
Output is correct |
| 31 |
Correct |
257 ms |
19856 KB |
Output is correct |
| 32 |
Correct |
124 ms |
19816 KB |
Output is correct |
| 33 |
Correct |
167 ms |
19852 KB |
Output is correct |
| 34 |
Correct |
184 ms |
26604 KB |
Output is correct |
| 35 |
Correct |
178 ms |
26604 KB |
Output is correct |
| 36 |
Correct |
150 ms |
26584 KB |
Output is correct |
| 37 |
Correct |
147 ms |
26592 KB |
Output is correct |
| 38 |
Correct |
146 ms |
26596 KB |
Output is correct |
| 39 |
Correct |
142 ms |
26592 KB |
Output is correct |
| 40 |
Correct |
145 ms |
26596 KB |
Output is correct |
| 41 |
Correct |
158 ms |
26692 KB |
Output is correct |
| 42 |
Correct |
170 ms |
26592 KB |
Output is correct |
| 43 |
Correct |
138 ms |
26564 KB |
Output is correct |
| 44 |
Correct |
1 ms |
204 KB |
Output is correct |
| 45 |
Correct |
1 ms |
204 KB |
Output is correct |
| 46 |
Correct |
1 ms |
204 KB |
Output is correct |
| 47 |
Correct |
1 ms |
204 KB |
Output is correct |
| 48 |
Correct |
1 ms |
296 KB |
Output is correct |
| 49 |
Correct |
1 ms |
204 KB |
Output is correct |
| 50 |
Correct |
1 ms |
204 KB |
Output is correct |
| 51 |
Correct |
1 ms |
204 KB |
Output is correct |
| 52 |
Correct |
1 ms |
204 KB |
Output is correct |
| 53 |
Correct |
1 ms |
204 KB |
Output is correct |
| 54 |
Correct |
1 ms |
332 KB |
Output is correct |
| 55 |
Correct |
1 ms |
332 KB |
Output is correct |
| 56 |
Correct |
1 ms |
204 KB |
Output is correct |
| 57 |
Correct |
1 ms |
204 KB |
Output is correct |
| 58 |
Correct |
1 ms |
204 KB |
Output is correct |
| 59 |
Correct |
1 ms |
204 KB |
Output is correct |
| 60 |
Correct |
1 ms |
204 KB |
Output is correct |
| 61 |
Correct |
1 ms |
204 KB |
Output is correct |
| 62 |
Correct |
1 ms |
204 KB |
Output is correct |
| 63 |
Correct |
2 ms |
204 KB |
Output is correct |
| 64 |
Correct |
140 ms |
26600 KB |
Output is correct |
| 65 |
Correct |
136 ms |
26568 KB |
Output is correct |
| 66 |
Correct |
144 ms |
26616 KB |
Output is correct |
| 67 |
Correct |
141 ms |
26584 KB |
Output is correct |
| 68 |
Correct |
15 ms |
2764 KB |
Output is correct |
| 69 |
Correct |
14 ms |
2728 KB |
Output is correct |
| 70 |
Correct |
14 ms |
2764 KB |
Output is correct |
| 71 |
Correct |
15 ms |
2808 KB |
Output is correct |
| 72 |
Correct |
17 ms |
2704 KB |
Output is correct |
| 73 |
Correct |
14 ms |
2736 KB |
Output is correct |
| 74 |
Correct |
168 ms |
26592 KB |
Output is correct |
| 75 |
Correct |
168 ms |
26604 KB |
Output is correct |
| 76 |
Correct |
149 ms |
26596 KB |
Output is correct |
| 77 |
Correct |
139 ms |
26716 KB |
Output is correct |
| 78 |
Correct |
153 ms |
26728 KB |
Output is correct |
| 79 |
Correct |
144 ms |
26588 KB |
Output is correct |
| 80 |
Correct |
130 ms |
26564 KB |
Output is correct |
| 81 |
Correct |
216 ms |
73540 KB |
Output is correct |
| 82 |
Correct |
228 ms |
73576 KB |
Output is correct |
| 83 |
Correct |
163 ms |
30788 KB |
Output is correct |
| 84 |
Correct |
150 ms |
29508 KB |
Output is correct |
| 85 |
Correct |
145 ms |
27616 KB |
Output is correct |
| 86 |
Correct |
145 ms |
26948 KB |
Output is correct |
| 87 |
Correct |
207 ms |
48344 KB |
Output is correct |
| 88 |
Correct |
186 ms |
39364 KB |
Output is correct |
| 89 |
Correct |
164 ms |
32216 KB |
Output is correct |
| 90 |
Correct |
140 ms |
26584 KB |
Output is correct |
| 91 |
Correct |
135 ms |
26596 KB |
Output is correct |
| 92 |
Correct |
143 ms |
26588 KB |
Output is correct |
