#include "books.h"
#include<bits/extc++.h>
using namespace std;
const int maxn = 1<<20;
using ll = long long;
using namespace __gnu_pbds;
using oset = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
ll vis[maxn][4];
ll minimum_walk(vector<int> p, int s) {
oset pref, suf;
vector<int> pos(p.size());
ll ans = 0, lst = -1;
for(int i = 0; i < p.size(); i++) suf.insert(i), pos[p[i]] = i;
for(int t, i = 0; i < p.size(); i++) {
//cout << i << "::\n";
int v = p[i];
suf.erase(v);
if(i != v) {
vis[i][(v > i)*3]++;
vis[i][1 + (pos[i]>i)]++;
}
t = pref.size()-pref.order_of_key(i+1);
vis[i][1] += t, vis[i][3] += t;
t = suf.order_of_key(i);
vis[i][0] += t, vis[i][2] += t;
vis[i][2] = vis[i][3] = max(vis[i][2], vis[i][3]);
vis[i][0] = vis[i][1] = max(vis[i][0], vis[i][1]);
pref.insert(v);
ans += (vis[i][0] + vis[i][2]);
if(vis[i][0] + vis[i][2]) lst = i;
//for(int j = 0; j < 4; j++) cout << vis[i][j] << " "; cout << endl;
if(i) {
assert(vis[i][0] == vis[i-1][2]);
assert(vis[i][1] == vis[i-1][3]);
}
}
for(int i = 0; i <= lst; i++) ans += 2*!(vis[i][0]+vis[i][2]);
return ans;
}
Compilation message
books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < p.size(); i++) suf.insert(i), pos[p[i]] = i;
~~^~~~~~~~~~
books.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int t, i = 0; i < p.size(); i++) {
~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
256 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
256 KB |
Output is correct |
| 4 |
Correct |
0 ms |
256 KB |
Output is correct |
| 5 |
Correct |
0 ms |
256 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
1 ms |
384 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
0 ms |
256 KB |
Output is correct |
| 10 |
Correct |
0 ms |
256 KB |
Output is correct |
| 11 |
Correct |
0 ms |
256 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
256 KB |
Output is correct |
| 14 |
Correct |
0 ms |
256 KB |
Output is correct |
| 15 |
Correct |
0 ms |
256 KB |
Output is correct |
| 16 |
Correct |
0 ms |
256 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| 18 |
Correct |
0 ms |
256 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
256 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
256 KB |
Output is correct |
| 4 |
Correct |
0 ms |
256 KB |
Output is correct |
| 5 |
Correct |
0 ms |
256 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
1 ms |
384 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
0 ms |
256 KB |
Output is correct |
| 10 |
Correct |
0 ms |
256 KB |
Output is correct |
| 11 |
Correct |
0 ms |
256 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
256 KB |
Output is correct |
| 14 |
Correct |
0 ms |
256 KB |
Output is correct |
| 15 |
Correct |
0 ms |
256 KB |
Output is correct |
| 16 |
Correct |
0 ms |
256 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| 18 |
Correct |
0 ms |
256 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Correct |
1 ms |
384 KB |
Output is correct |
| 21 |
Correct |
1 ms |
384 KB |
Output is correct |
| 22 |
Incorrect |
1 ms |
384 KB |
3rd lines differ - on the 1st token, expected: '2082', found: '1742' |
| 23 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
256 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
256 KB |
Output is correct |
| 4 |
Correct |
0 ms |
256 KB |
Output is correct |
| 5 |
Correct |
0 ms |
256 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
1 ms |
384 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
0 ms |
256 KB |
Output is correct |
| 10 |
Correct |
0 ms |
256 KB |
Output is correct |
| 11 |
Correct |
0 ms |
256 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
256 KB |
Output is correct |
| 14 |
Correct |
0 ms |
256 KB |
Output is correct |
| 15 |
Correct |
0 ms |
256 KB |
Output is correct |
| 16 |
Correct |
0 ms |
256 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| 18 |
Correct |
0 ms |
256 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Correct |
1 ms |
384 KB |
Output is correct |
| 21 |
Correct |
1 ms |
384 KB |
Output is correct |
| 22 |
Incorrect |
1 ms |
384 KB |
3rd lines differ - on the 1st token, expected: '2082', found: '1742' |
| 23 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
3rd lines differ - on the 1st token, expected: '3304', found: '2744' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
256 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
256 KB |
Output is correct |
| 4 |
Correct |
0 ms |
256 KB |
Output is correct |
| 5 |
Correct |
0 ms |
256 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
1 ms |
384 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
0 ms |
256 KB |
Output is correct |
| 10 |
Correct |
0 ms |
256 KB |
Output is correct |
| 11 |
Correct |
0 ms |
256 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
256 KB |
Output is correct |
| 14 |
Correct |
0 ms |
256 KB |
Output is correct |
| 15 |
Correct |
0 ms |
256 KB |
Output is correct |
| 16 |
Correct |
0 ms |
256 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| 18 |
Correct |
0 ms |
256 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Correct |
1 ms |
384 KB |
Output is correct |
| 21 |
Correct |
1 ms |
384 KB |
Output is correct |
| 22 |
Incorrect |
1 ms |
384 KB |
3rd lines differ - on the 1st token, expected: '2082', found: '1742' |
| 23 |
Halted |
0 ms |
0 KB |
- |
