#include "books.h"
#include <string.h>
using namespace std;
const int N = 1000000;
const int INF = 0x3f3f3f3f;
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
typedef vector<int> vi;
unsigned int X = 12345;
int rand_() {
return (X *= 3) >> 1;
}
char visited[N]; int xx[N], ll[N], rr[N], ll_[N], rr_[N], hh[N], m;
void sort(int *hh, int l, int r) {
while (l < r) {
int i = l, j = l, k = r, h = hh[l + rand_() % (r - l)], tmp;
while (j < k) {
int c = ll_[hh[j]] - ll_[h];
if (c == 0)
j++;
else if (c < 0) {
tmp = hh[i], hh[i] = hh[j], hh[j] = tmp;
i++, j++;
} else {
k--;
tmp = hh[j], hh[j] = hh[k], hh[k] = tmp;
}
}
sort(hh, l, i);
l = k;
}
}
long long minimum_walk(vi pp, int s) {
int n = pp.size(), h, h_, h1, i, j, l, r, l_, r_, cnt;
long long ans;
ans = 0;
for (i = 0; i < n; i++) {
if (i < pp[i])
ans += pp[i] - i;
else if (i > pp[i])
ans += i - pp[i];
if (!visited[i]) {
l_ = -INF, r_ = INF, l = INF, r = -INF;
while (!visited[i]) {
l = min(l, i), r = max(r, i);
if (i <= s)
l_ = max(l_, i);
if (i >= s)
r_ = min(r_, i);
visited[i] = 1, i = pp[i];
}
if (l <= s && s <= r)
ll_[m] = l_, rr_[m] = r_, ll[m] = l, rr[m] = r, m++;
else
xx[l]++, xx[r]--;
}
}
for (i = 1; i < n - 1; i++)
xx[i] += xx[i - 1];
for (i = n - 1; i > 0; i--)
xx[i] = xx[i - 1] == 0;
for (i = 1; i < n; i++)
xx[i] += xx[i - 1];
for (h = 0; h < m; h++)
hh[h] = h;
sort(hh, 0, m);
cnt = 0;
for (h = 0; h < m; h++) {
h_ = hh[h];
while (cnt && rr_[hh[cnt - 1]] < rr_[h_]) {
h1 = hh[--cnt];
ll_[h_] = max(ll_[h_], ll_[h1]), rr_[h_] = min(rr_[h_], rr_[h1]);
ll[h_] = min(ll[h_], ll[h1]), rr[h_] = max(rr[h_], rr[h1]);
}
hh[cnt++] = h_;
}
for (h = cnt - 1, l_ = s, r_ = s; h >= 0; h--) {
h_ = hh[h];
if (l_ > ll_[h_] && r_ < rr_[h_])
ans += min(xx[l_] - xx[ll_[h_]], xx[rr_[h_]] - xx[r_]) * 2;
l_ = min(l_, ll[h_]), r_ = max(r_, rr[h_]);
}
i = 0;
while (i < l_ && pp[i] == i)
i++;
j = n - 1;
while (j > r_ && pp[j] == j)
j--;
ans += (xx[l_] - xx[i] + xx[j] - xx[r_]) * 2;
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
0 ms |
332 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
0 ms |
332 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
1 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
332 KB |
Output is correct |
| 26 |
Correct |
1 ms |
332 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
0 ms |
332 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
1 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
332 KB |
Output is correct |
| 26 |
Correct |
1 ms |
332 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| 30 |
Correct |
184 ms |
13028 KB |
Output is correct |
| 31 |
Correct |
183 ms |
12912 KB |
Output is correct |
| 32 |
Correct |
139 ms |
12996 KB |
Output is correct |
| 33 |
Correct |
145 ms |
13032 KB |
Output is correct |
| 34 |
Correct |
151 ms |
13024 KB |
Output is correct |
| 35 |
Correct |
149 ms |
12996 KB |
Output is correct |
| 36 |
Correct |
145 ms |
12916 KB |
Output is correct |
| 37 |
Correct |
147 ms |
12908 KB |
Output is correct |
| 38 |
Correct |
148 ms |
12996 KB |
Output is correct |
| 39 |
Correct |
150 ms |
13032 KB |
Output is correct |
| 40 |
Correct |
147 ms |
12908 KB |
Output is correct |
| 41 |
Correct |
160 ms |
13124 KB |
Output is correct |
| 42 |
Correct |
159 ms |
13024 KB |
Output is correct |
| 43 |
Correct |
153 ms |
13124 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 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 |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
288 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
0 ms |
332 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
1 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
332 KB |
Output is correct |
| 26 |
Correct |
1 ms |
332 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| 30 |
Correct |
184 ms |
13028 KB |
Output is correct |
| 31 |
Correct |
183 ms |
12912 KB |
Output is correct |
| 32 |
Correct |
139 ms |
12996 KB |
Output is correct |
| 33 |
Correct |
145 ms |
13032 KB |
Output is correct |
| 34 |
Correct |
151 ms |
13024 KB |
Output is correct |
| 35 |
Correct |
149 ms |
12996 KB |
Output is correct |
| 36 |
Correct |
145 ms |
12916 KB |
Output is correct |
| 37 |
Correct |
147 ms |
12908 KB |
Output is correct |
| 38 |
Correct |
148 ms |
12996 KB |
Output is correct |
| 39 |
Correct |
150 ms |
13032 KB |
Output is correct |
| 40 |
Correct |
147 ms |
12908 KB |
Output is correct |
| 41 |
Correct |
160 ms |
13124 KB |
Output is correct |
| 42 |
Correct |
159 ms |
13024 KB |
Output is correct |
| 43 |
Correct |
153 ms |
13124 KB |
Output is correct |
| 44 |
Correct |
0 ms |
332 KB |
Output is correct |
| 45 |
Correct |
1 ms |
332 KB |
Output is correct |
| 46 |
Correct |
1 ms |
332 KB |
Output is correct |
| 47 |
Correct |
1 ms |
332 KB |
Output is correct |
| 48 |
Correct |
1 ms |
332 KB |
Output is correct |
| 49 |
Correct |
1 ms |
332 KB |
Output is correct |
| 50 |
Correct |
1 ms |
332 KB |
Output is correct |
| 51 |
Correct |
1 ms |
332 KB |
Output is correct |
| 52 |
Correct |
1 ms |
332 KB |
Output is correct |
| 53 |
Correct |
1 ms |
332 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 |
332 KB |
Output is correct |
| 57 |
Correct |
1 ms |
280 KB |
Output is correct |
| 58 |
Correct |
1 ms |
332 KB |
Output is correct |
| 59 |
Correct |
1 ms |
332 KB |
Output is correct |
| 60 |
Correct |
1 ms |
332 KB |
Output is correct |
| 61 |
Correct |
1 ms |
332 KB |
Output is correct |
| 62 |
Correct |
1 ms |
288 KB |
Output is correct |
| 63 |
Correct |
1 ms |
332 KB |
Output is correct |
| 64 |
Correct |
146 ms |
19680 KB |
Output is correct |
| 65 |
Correct |
152 ms |
19676 KB |
Output is correct |
| 66 |
Correct |
150 ms |
19672 KB |
Output is correct |
| 67 |
Correct |
147 ms |
19760 KB |
Output is correct |
| 68 |
Correct |
16 ms |
2124 KB |
Output is correct |
| 69 |
Correct |
14 ms |
2084 KB |
Output is correct |
| 70 |
Correct |
14 ms |
2072 KB |
Output is correct |
| 71 |
Correct |
15 ms |
2124 KB |
Output is correct |
| 72 |
Correct |
14 ms |
2088 KB |
Output is correct |
| 73 |
Correct |
15 ms |
2088 KB |
Output is correct |
| 74 |
Correct |
149 ms |
19788 KB |
Output is correct |
| 75 |
Correct |
146 ms |
19652 KB |
Output is correct |
| 76 |
Correct |
153 ms |
19672 KB |
Output is correct |
| 77 |
Correct |
150 ms |
19652 KB |
Output is correct |
| 78 |
Correct |
148 ms |
19680 KB |
Output is correct |
| 79 |
Correct |
146 ms |
19652 KB |
Output is correct |
| 80 |
Correct |
144 ms |
19680 KB |
Output is correct |
| 81 |
Correct |
177 ms |
26308 KB |
Output is correct |
| 82 |
Correct |
195 ms |
26360 KB |
Output is correct |
| 83 |
Correct |
151 ms |
20328 KB |
Output is correct |
| 84 |
Correct |
161 ms |
20112 KB |
Output is correct |
| 85 |
Correct |
156 ms |
19908 KB |
Output is correct |
| 86 |
Correct |
169 ms |
19796 KB |
Output is correct |
| 87 |
Correct |
166 ms |
22848 KB |
Output is correct |
| 88 |
Correct |
179 ms |
21588 KB |
Output is correct |
| 89 |
Correct |
153 ms |
20548 KB |
Output is correct |
| 90 |
Correct |
146 ms |
19804 KB |
Output is correct |
| 91 |
Correct |
151 ms |
19688 KB |
Output is correct |
| 92 |
Correct |
151 ms |
19804 KB |
Output is correct |
