#include "books.h"
#pragma GCC optimize("O2,unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2,ssse3")
#include<bits/extc++.h>
using namespace std;
const int maxn = 1<<20;
using ll = long long;
struct oset {
vector<int> f;
oset() : f(maxn) {}
int insert(int x) {
x++;
for(; x < maxn; x += x&-x) f[x]++;
}
void erase(int x) {
x++;
for(; x < maxn; x += x&-x) f[x]--;
}
int order_of_key(int x) {
int r = 0;
for(; x > 0; x -= x&-x) r += f[x];
return r;
}
};
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, fi = -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 = i-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;
pref.insert(v);
if(vis[i][0] + vis[i][2] + vis[i][3] + vis[i][1]) {
lst = i;
if(fi == -1) fi = 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]);
}
}
fi = min(fi, (ll)s);
for(int i = fi; i <= lst; i++) {
for(int j = 0; j < 4; j++) {
if(i == lst && j >= 2) break;
if(i == fi && j < 2) continue;
if(vis[i][j] == 0) {
vis[i][j]++;
vis[i + (j<2?-1:1)][j^3]++;
}
}
}
for(int i = 0; i < p.size(); i++) {
//cout << vis[i][0] << " " << vis[i][1] << " " << vis[i][2] << " " << vis[i][3] << " " << g[i] << endl;
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]);
ans += (vis[i][0] + vis[i][2]);
}
return ans;
}
Compilation message
books.cpp: In member function 'int oset::insert(int)':
books.cpp:14:2: warning: no return statement in function returning non-void [-Wreturn-type]
}
^
books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:30:19: 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:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int t, i = 0; i < p.size(); i++) {
~~^~~~~~~~~~
books.cpp:72:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < p.size(); i++) {
~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 2 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 3 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 4 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 5 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 6 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 7 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 8 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 9 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 10 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 13 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 14 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 16 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 18 |
Correct |
5 ms |
8576 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 2 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 3 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 4 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 5 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 6 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 7 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 8 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 9 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 10 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 13 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 14 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 16 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 18 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 21 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 23 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 24 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 25 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 26 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 27 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 28 |
Correct |
6 ms |
8576 KB |
Output is correct |
| 29 |
Correct |
5 ms |
8576 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 2 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 3 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 4 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 5 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 6 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 7 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 8 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 9 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 10 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 13 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 14 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 16 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 18 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 21 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 23 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 24 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 25 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 26 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 27 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 28 |
Correct |
6 ms |
8576 KB |
Output is correct |
| 29 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 30 |
Correct |
391 ms |
51580 KB |
Output is correct |
| 31 |
Correct |
412 ms |
58376 KB |
Output is correct |
| 32 |
Correct |
272 ms |
58308 KB |
Output is correct |
| 33 |
Correct |
284 ms |
58360 KB |
Output is correct |
| 34 |
Correct |
277 ms |
58360 KB |
Output is correct |
| 35 |
Correct |
276 ms |
58360 KB |
Output is correct |
| 36 |
Correct |
278 ms |
58360 KB |
Output is correct |
| 37 |
Correct |
282 ms |
58360 KB |
Output is correct |
| 38 |
Correct |
287 ms |
58488 KB |
Output is correct |
| 39 |
Correct |
288 ms |
58360 KB |
Output is correct |
| 40 |
Correct |
295 ms |
58360 KB |
Output is correct |
| 41 |
Correct |
317 ms |
58360 KB |
Output is correct |
| 42 |
Correct |
309 ms |
58360 KB |
Output is correct |
| 43 |
Correct |
279 ms |
58364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
5 ms |
8576 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 |
5 ms |
8576 KB |
Output is correct |
| 2 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 3 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 4 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 5 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 6 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 7 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 8 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 9 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 10 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 13 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 14 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 16 |
Correct |
4 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 18 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 21 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 23 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 24 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 25 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 26 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 27 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 28 |
Correct |
6 ms |
8576 KB |
Output is correct |
| 29 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 30 |
Correct |
391 ms |
51580 KB |
Output is correct |
| 31 |
Correct |
412 ms |
58376 KB |
Output is correct |
| 32 |
Correct |
272 ms |
58308 KB |
Output is correct |
| 33 |
Correct |
284 ms |
58360 KB |
Output is correct |
| 34 |
Correct |
277 ms |
58360 KB |
Output is correct |
| 35 |
Correct |
276 ms |
58360 KB |
Output is correct |
| 36 |
Correct |
278 ms |
58360 KB |
Output is correct |
| 37 |
Correct |
282 ms |
58360 KB |
Output is correct |
| 38 |
Correct |
287 ms |
58488 KB |
Output is correct |
| 39 |
Correct |
288 ms |
58360 KB |
Output is correct |
| 40 |
Correct |
295 ms |
58360 KB |
Output is correct |
| 41 |
Correct |
317 ms |
58360 KB |
Output is correct |
| 42 |
Correct |
309 ms |
58360 KB |
Output is correct |
| 43 |
Correct |
279 ms |
58364 KB |
Output is correct |
| 44 |
Incorrect |
5 ms |
8576 KB |
3rd lines differ - on the 1st token, expected: '3304', found: '2744' |
| 45 |
Halted |
0 ms |
0 KB |
- |
