#include <bits/stdc++.h>
#include "shoes.h"
using namespace std;
const int N = 2e5 + 5;
vector<int> fenw(N, 0);
queue<int> l[N], r[N];
void Add(int x, int val) {
for (; x < N; x += x & -x) {
fenw[x] += val;
}
}
long long Get(int x) {
long long res = 0;
for (; x > 0; x -= x & -x) {
res += fenw[x];
}
return res;
}
bool cmp(pair<int, int> a, pair<int, int> b) {
return a.first + a.second - (a.first > a.second) > b.first + b.second - (b.first > b.second);
}
long long count_swaps(vector<int> a) {
int n = (int) a.size();
long long ans = 0;
for (int i = 0; i < n; i++) {
if (a[i] > 0) {
l[a[i]].push(i);
} else {
r[-a[i]].push(i);
}
}
vector<pair<int, int>> v;
for (int i = 1; i <= n / 2; i++) {
while (!l[i].empty()) {
v.push_back({l[i].front(), r[i].front()});
l[i].pop();
r[i].pop();
}
}
sort(v.begin(), v.end(), cmp);
for (int i = 0; i < n; i += 2) {
auto k = v.back();
v.pop_back();
ans += k.first + k.second - (k.first > k.second) + Get(n) * 2 - Get(k.first + 1) - Get(k.second + 1) - i * 2;
Add(k.first + 1, 1);
Add(k.second + 1, 1);
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
204 ms |
270328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 3 |
Correct |
200 ms |
270332 KB |
Output is correct |
| 4 |
Correct |
202 ms |
270456 KB |
Output is correct |
| 5 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 6 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 7 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 8 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 9 |
Correct |
211 ms |
270328 KB |
Output is correct |
| 10 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 11 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 12 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 13 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 14 |
Correct |
215 ms |
270584 KB |
Output is correct |
| 15 |
Correct |
201 ms |
270332 KB |
Output is correct |
| 16 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 17 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 18 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 19 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 20 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 21 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 22 |
Correct |
203 ms |
270420 KB |
Output is correct |
| 23 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 24 |
Correct |
207 ms |
270456 KB |
Output is correct |
| 25 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 26 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 27 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 28 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 29 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 30 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 31 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 32 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 33 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 34 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 35 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 36 |
Correct |
203 ms |
270396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 3 |
Correct |
204 ms |
270400 KB |
Output is correct |
| 4 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 5 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 6 |
Correct |
205 ms |
270328 KB |
Output is correct |
| 7 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 8 |
Correct |
201 ms |
270456 KB |
Output is correct |
| 9 |
Correct |
201 ms |
270456 KB |
Output is correct |
| 10 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 11 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 12 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 13 |
Correct |
200 ms |
270448 KB |
Output is correct |
| 14 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 15 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 16 |
Correct |
202 ms |
270456 KB |
Output is correct |
| 17 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 18 |
Correct |
220 ms |
270456 KB |
Output is correct |
| 19 |
Correct |
221 ms |
270456 KB |
Output is correct |
| 20 |
Correct |
223 ms |
270968 KB |
Output is correct |
| 21 |
Correct |
223 ms |
270968 KB |
Output is correct |
| 22 |
Correct |
264 ms |
275192 KB |
Output is correct |
| 23 |
Correct |
298 ms |
275188 KB |
Output is correct |
| 24 |
Correct |
266 ms |
275192 KB |
Output is correct |
| 25 |
Correct |
259 ms |
275064 KB |
Output is correct |
| 26 |
Correct |
264 ms |
275188 KB |
Output is correct |
| 27 |
Correct |
260 ms |
275060 KB |
Output is correct |
| 28 |
Correct |
265 ms |
275192 KB |
Output is correct |
| 29 |
Correct |
273 ms |
275320 KB |
Output is correct |
| 30 |
Correct |
267 ms |
275160 KB |
Output is correct |
| 31 |
Correct |
269 ms |
275192 KB |
Output is correct |
| 32 |
Correct |
267 ms |
275192 KB |
Output is correct |
| 33 |
Correct |
263 ms |
275064 KB |
Output is correct |
| 34 |
Correct |
267 ms |
275196 KB |
Output is correct |
| 35 |
Correct |
199 ms |
270392 KB |
Output is correct |
| 36 |
Correct |
209 ms |
270448 KB |
Output is correct |
| 37 |
Correct |
262 ms |
275196 KB |
Output is correct |
| 38 |
Correct |
264 ms |
275464 KB |
Output is correct |
| 39 |
Correct |
265 ms |
275320 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 3 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 4 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 5 |
Correct |
287 ms |
274416 KB |
Output is correct |
| 6 |
Correct |
271 ms |
274340 KB |
Output is correct |
| 7 |
Correct |
281 ms |
274416 KB |
Output is correct |
| 8 |
Correct |
273 ms |
275188 KB |
Output is correct |
| 9 |
Correct |
286 ms |
274416 KB |
Output is correct |
| 10 |
Correct |
285 ms |
274416 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 3 |
Correct |
200 ms |
270332 KB |
Output is correct |
| 4 |
Correct |
202 ms |
270456 KB |
Output is correct |
| 5 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 6 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 7 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 8 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 9 |
Correct |
211 ms |
270328 KB |
Output is correct |
| 10 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 11 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 12 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 13 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 14 |
Correct |
215 ms |
270584 KB |
Output is correct |
| 15 |
Correct |
201 ms |
270332 KB |
Output is correct |
| 16 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 17 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 18 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 19 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 20 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 21 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 22 |
Correct |
203 ms |
270420 KB |
Output is correct |
| 23 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 24 |
Correct |
207 ms |
270456 KB |
Output is correct |
| 25 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 26 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 27 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 28 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 29 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 30 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 31 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 32 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 33 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 34 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 35 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 36 |
Correct |
203 ms |
270396 KB |
Output is correct |
| 37 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 38 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 39 |
Correct |
208 ms |
270328 KB |
Output is correct |
| 40 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 41 |
Correct |
201 ms |
270488 KB |
Output is correct |
| 42 |
Correct |
207 ms |
270456 KB |
Output is correct |
| 43 |
Correct |
206 ms |
270456 KB |
Output is correct |
| 44 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 45 |
Correct |
206 ms |
270456 KB |
Output is correct |
| 46 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 47 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 48 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 49 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 50 |
Correct |
224 ms |
270456 KB |
Output is correct |
| 51 |
Correct |
222 ms |
270456 KB |
Output is correct |
| 52 |
Correct |
206 ms |
270456 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 2 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 3 |
Correct |
200 ms |
270332 KB |
Output is correct |
| 4 |
Correct |
202 ms |
270456 KB |
Output is correct |
| 5 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 6 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 7 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 8 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 9 |
Correct |
211 ms |
270328 KB |
Output is correct |
| 10 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 11 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 12 |
Correct |
204 ms |
270332 KB |
Output is correct |
| 13 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 14 |
Correct |
215 ms |
270584 KB |
Output is correct |
| 15 |
Correct |
201 ms |
270332 KB |
Output is correct |
| 16 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 17 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 18 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 19 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 20 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 21 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 22 |
Correct |
203 ms |
270420 KB |
Output is correct |
| 23 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 24 |
Correct |
207 ms |
270456 KB |
Output is correct |
| 25 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 26 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 27 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 28 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 29 |
Correct |
199 ms |
270328 KB |
Output is correct |
| 30 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 31 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 32 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 33 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 34 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 35 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 36 |
Correct |
203 ms |
270396 KB |
Output is correct |
| 37 |
Correct |
204 ms |
270400 KB |
Output is correct |
| 38 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 39 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 40 |
Correct |
205 ms |
270328 KB |
Output is correct |
| 41 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 42 |
Correct |
201 ms |
270456 KB |
Output is correct |
| 43 |
Correct |
201 ms |
270456 KB |
Output is correct |
| 44 |
Correct |
200 ms |
270328 KB |
Output is correct |
| 45 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 46 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 47 |
Correct |
200 ms |
270448 KB |
Output is correct |
| 48 |
Correct |
203 ms |
270328 KB |
Output is correct |
| 49 |
Correct |
202 ms |
270328 KB |
Output is correct |
| 50 |
Correct |
202 ms |
270456 KB |
Output is correct |
| 51 |
Correct |
201 ms |
270328 KB |
Output is correct |
| 52 |
Correct |
220 ms |
270456 KB |
Output is correct |
| 53 |
Correct |
221 ms |
270456 KB |
Output is correct |
| 54 |
Correct |
223 ms |
270968 KB |
Output is correct |
| 55 |
Correct |
223 ms |
270968 KB |
Output is correct |
| 56 |
Correct |
264 ms |
275192 KB |
Output is correct |
| 57 |
Correct |
298 ms |
275188 KB |
Output is correct |
| 58 |
Correct |
266 ms |
275192 KB |
Output is correct |
| 59 |
Correct |
259 ms |
275064 KB |
Output is correct |
| 60 |
Correct |
264 ms |
275188 KB |
Output is correct |
| 61 |
Correct |
260 ms |
275060 KB |
Output is correct |
| 62 |
Correct |
265 ms |
275192 KB |
Output is correct |
| 63 |
Correct |
273 ms |
275320 KB |
Output is correct |
| 64 |
Correct |
267 ms |
275160 KB |
Output is correct |
| 65 |
Correct |
269 ms |
275192 KB |
Output is correct |
| 66 |
Correct |
267 ms |
275192 KB |
Output is correct |
| 67 |
Correct |
263 ms |
275064 KB |
Output is correct |
| 68 |
Correct |
267 ms |
275196 KB |
Output is correct |
| 69 |
Correct |
199 ms |
270392 KB |
Output is correct |
| 70 |
Correct |
209 ms |
270448 KB |
Output is correct |
| 71 |
Correct |
262 ms |
275196 KB |
Output is correct |
| 72 |
Correct |
264 ms |
275464 KB |
Output is correct |
| 73 |
Correct |
265 ms |
275320 KB |
Output is correct |
| 74 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 75 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 76 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 77 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 78 |
Correct |
287 ms |
274416 KB |
Output is correct |
| 79 |
Correct |
271 ms |
274340 KB |
Output is correct |
| 80 |
Correct |
281 ms |
274416 KB |
Output is correct |
| 81 |
Correct |
273 ms |
275188 KB |
Output is correct |
| 82 |
Correct |
286 ms |
274416 KB |
Output is correct |
| 83 |
Correct |
285 ms |
274416 KB |
Output is correct |
| 84 |
Correct |
204 ms |
270328 KB |
Output is correct |
| 85 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 86 |
Correct |
208 ms |
270328 KB |
Output is correct |
| 87 |
Correct |
206 ms |
270328 KB |
Output is correct |
| 88 |
Correct |
201 ms |
270488 KB |
Output is correct |
| 89 |
Correct |
207 ms |
270456 KB |
Output is correct |
| 90 |
Correct |
206 ms |
270456 KB |
Output is correct |
| 91 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 92 |
Correct |
206 ms |
270456 KB |
Output is correct |
| 93 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 94 |
Correct |
205 ms |
270456 KB |
Output is correct |
| 95 |
Correct |
204 ms |
270456 KB |
Output is correct |
| 96 |
Correct |
203 ms |
270456 KB |
Output is correct |
| 97 |
Correct |
224 ms |
270456 KB |
Output is correct |
| 98 |
Correct |
222 ms |
270456 KB |
Output is correct |
| 99 |
Correct |
206 ms |
270456 KB |
Output is correct |
| 100 |
Correct |
201 ms |
270456 KB |
Output is correct |
| 101 |
Correct |
209 ms |
270840 KB |
Output is correct |
| 102 |
Correct |
206 ms |
270840 KB |
Output is correct |
| 103 |
Correct |
290 ms |
274296 KB |
Output is correct |
| 104 |
Correct |
285 ms |
274404 KB |
Output is correct |
| 105 |
Correct |
287 ms |
274416 KB |
Output is correct |
| 106 |
Correct |
276 ms |
274400 KB |
Output is correct |
| 107 |
Correct |
274 ms |
274416 KB |
Output is correct |
| 108 |
Correct |
284 ms |
274524 KB |
Output is correct |
| 109 |
Correct |
267 ms |
275188 KB |
Output is correct |
| 110 |
Correct |
264 ms |
275192 KB |
Output is correct |
| 111 |
Correct |
280 ms |
274416 KB |
Output is correct |
| 112 |
Correct |
285 ms |
274416 KB |
Output is correct |
| 113 |
Correct |
270 ms |
274416 KB |
Output is correct |
| 114 |
Correct |
272 ms |
274400 KB |
Output is correct |
| 115 |
Correct |
271 ms |
274416 KB |
Output is correct |
