#include "books.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int crit_l, crit_r;
int cmp[1000000], cmp_l[1000000], cmp_r[1000000];
map<pair<int, int>, ll> dp;
void extend(int &l, int &r) {
int ext_l = min(cmp_l[cmp[l]], cmp_l[cmp[r]]);
int ext_r = max(cmp_r[cmp[l]], cmp_r[cmp[r]]);
while (l != ext_l || r != ext_r) {
if (l != ext_l) {
l--;
ext_l = min(ext_l, cmp_l[cmp[l]]);
ext_r = max(ext_r, cmp_r[cmp[l]]);
} else {
r++;
ext_l = min(ext_l, cmp_l[cmp[r]]);
ext_r = max(ext_r, cmp_r[cmp[r]]);
}
}
}
ll compute(int l, int r) {
extend(l, r);
if (dp.count({l, r})) return dp[{l, r}];
if (l == crit_l) return dp[{l, r}] = compute(l, r + 1) + 2;
if (r == crit_r) return dp[{l, r}] = compute(l - 1, r) + 2;
ll to_l = 2;
int nl = l - 1, nr = r, tl = l, tr = r + 1;
extend(nl, nr), extend(tl, tr);
while (nl != crit_l && nr < tr) {
to_l += 2;
nl--;
extend(nl, nr);
}
if (nr < tr) return dp[{l, r}] = to_l + compute(nl, nr);
ll to_r = 2;
nl = l, nr = r + 1, tl = l - 1, tr = r;
extend(nl, nr), extend(tl, tr);
while (nl > tl) {
to_r += 2;
nr++;
extend(nl, nr);
}
return dp[{l, r}] = min(to_l, to_r) + compute(nl, nr);
}
ll minimum_walk(vector<int> p, int s) {
int n = p.size(), cmp_cnt = 0;
fill(cmp, cmp + n, -1);
crit_l = s, crit_r = s;
ll intra = 0;
for (int i = 0; i < n; i++) {
intra += abs(p[i] - i);
if (cmp[i] == -1) {
int curr = i;
cmp_l[cmp_cnt] = cmp_r[cmp_cnt] = i;
do {
cmp[curr] = cmp_cnt;
cmp_r[cmp_cnt] = max(cmp_r[cmp_cnt], curr);
curr = p[curr];
} while (curr != i);
if (i != p[i]) {
crit_l = min(crit_l, cmp_l[cmp_cnt]);
crit_r = max(crit_r, cmp_r[cmp_cnt]);
}
cmp_cnt++;
}
}
dp[{crit_l, crit_r}] = 0;
return intra + compute(s, s);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
225 ms |
12140 KB |
Output is correct |
| 31 |
Correct |
225 ms |
12100 KB |
Output is correct |
| 32 |
Correct |
168 ms |
19852 KB |
Output is correct |
| 33 |
Correct |
428 ms |
137708 KB |
Output is correct |
| 34 |
Correct |
379 ms |
137580 KB |
Output is correct |
| 35 |
Correct |
334 ms |
102236 KB |
Output is correct |
| 36 |
Correct |
239 ms |
39148 KB |
Output is correct |
| 37 |
Correct |
185 ms |
13676 KB |
Output is correct |
| 38 |
Correct |
199 ms |
12396 KB |
Output is correct |
| 39 |
Correct |
152 ms |
12268 KB |
Output is correct |
| 40 |
Correct |
188 ms |
12100 KB |
Output is correct |
| 41 |
Correct |
169 ms |
12236 KB |
Output is correct |
| 42 |
Correct |
169 ms |
12012 KB |
Output is correct |
| 43 |
Correct |
146 ms |
17900 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
512 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
225 ms |
12140 KB |
Output is correct |
| 31 |
Correct |
225 ms |
12100 KB |
Output is correct |
| 32 |
Correct |
168 ms |
19852 KB |
Output is correct |
| 33 |
Correct |
428 ms |
137708 KB |
Output is correct |
| 34 |
Correct |
379 ms |
137580 KB |
Output is correct |
| 35 |
Correct |
334 ms |
102236 KB |
Output is correct |
| 36 |
Correct |
239 ms |
39148 KB |
Output is correct |
| 37 |
Correct |
185 ms |
13676 KB |
Output is correct |
| 38 |
Correct |
199 ms |
12396 KB |
Output is correct |
| 39 |
Correct |
152 ms |
12268 KB |
Output is correct |
| 40 |
Correct |
188 ms |
12100 KB |
Output is correct |
| 41 |
Correct |
169 ms |
12236 KB |
Output is correct |
| 42 |
Correct |
169 ms |
12012 KB |
Output is correct |
| 43 |
Correct |
146 ms |
17900 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
1 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
1 ms |
364 KB |
Output is correct |
| 55 |
Correct |
1 ms |
512 KB |
Output is correct |
| 56 |
Correct |
1 ms |
364 KB |
Output is correct |
| 57 |
Correct |
1 ms |
364 KB |
Output is correct |
| 58 |
Correct |
1 ms |
364 KB |
Output is correct |
| 59 |
Correct |
1 ms |
364 KB |
Output is correct |
| 60 |
Correct |
1 ms |
364 KB |
Output is correct |
| 61 |
Correct |
1 ms |
364 KB |
Output is correct |
| 62 |
Correct |
1 ms |
364 KB |
Output is correct |
| 63 |
Correct |
1 ms |
364 KB |
Output is correct |
| 64 |
Correct |
144 ms |
17772 KB |
Output is correct |
| 65 |
Correct |
169 ms |
18412 KB |
Output is correct |
| 66 |
Correct |
143 ms |
12268 KB |
Output is correct |
| 67 |
Correct |
147 ms |
12268 KB |
Output is correct |
| 68 |
Correct |
15 ms |
1772 KB |
Output is correct |
| 69 |
Correct |
14 ms |
1644 KB |
Output is correct |
| 70 |
Correct |
14 ms |
1772 KB |
Output is correct |
| 71 |
Correct |
18 ms |
2028 KB |
Output is correct |
| 72 |
Correct |
14 ms |
2156 KB |
Output is correct |
| 73 |
Correct |
15 ms |
1516 KB |
Output is correct |
| 74 |
Correct |
230 ms |
65516 KB |
Output is correct |
| 75 |
Correct |
274 ms |
77548 KB |
Output is correct |
| 76 |
Correct |
148 ms |
17772 KB |
Output is correct |
| 77 |
Correct |
151 ms |
17900 KB |
Output is correct |
| 78 |
Correct |
150 ms |
17076 KB |
Output is correct |
| 79 |
Correct |
145 ms |
17004 KB |
Output is correct |
| 80 |
Correct |
179 ms |
19968 KB |
Output is correct |
| 81 |
Correct |
272 ms |
78700 KB |
Output is correct |
| 82 |
Correct |
331 ms |
78572 KB |
Output is correct |
| 83 |
Correct |
188 ms |
20676 KB |
Output is correct |
| 84 |
Correct |
185 ms |
18540 KB |
Output is correct |
| 85 |
Correct |
181 ms |
14572 KB |
Output is correct |
| 86 |
Correct |
161 ms |
12908 KB |
Output is correct |
| 87 |
Correct |
247 ms |
47684 KB |
Output is correct |
| 88 |
Correct |
186 ms |
34668 KB |
Output is correct |
| 89 |
Correct |
231 ms |
23276 KB |
Output is correct |
| 90 |
Correct |
141 ms |
12396 KB |
Output is correct |
| 91 |
Correct |
141 ms |
12228 KB |
Output is correct |
| 92 |
Correct |
171 ms |
12100 KB |
Output is correct |
