#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 |