#include "shoes.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
int seg[400005];
ll ans;
bool ed[400005];
vector<int> s;
queue<int> has[400005];
tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ft[400005];
inline int ls(int x) { return x & -x; }
pair<int, int> qry(int p, int x) {
pair<int, int> r = make_pair(0, 0);
p = s.size() - p + 2;
for (; p; p -= ls(p)) {
r.first += ft[p].order_of_key(x);
r.second += ft[p].size() - ft[p].order_of_key(x);
}
return r;
}
void upd(int p, int v) {
p = s.size() - p + 2;
for (; p <= s.size(); p += ls(p)) ft[p].insert(v);
}
ll count_swaps(vector<int> _s) {
s = _s;
for (int i = 0; i < s.size(); i++) {
if (!has[-s[i] + s.size() / 2].empty()) {
seg[i] = has[-s[i] + s.size() / 2].front();
ed[i] = 1;
if (s[i] < 0) ans++;
has[-s[i] + s.size() / 2].pop();
} else has[s[i] + s.size() / 2].push(i);
}
for (int i = 0; i < s.size(); i++) {
if (!ed[i]) continue;
pair<int, int> tmp = qry(seg[i] + 1, seg[i]);
upd(i, seg[i]);
ans += (ll)tmp.first + (ll)tmp.second * 2ll;
}
return ans;
}
Compilation message
shoes.cpp: In function 'void upd(int, int)':
shoes.cpp:31:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
31 | for (; p <= s.size(); p += ls(p)) ft[p].insert(v);
| ~~^~~~~~~~~~~
shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:36:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | for (int i = 0; i < s.size(); i++) {
| ~~^~~~~~~~~~
shoes.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | for (int i = 0; i < s.size(); i++) {
| ~~^~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
179 ms |
300868 KB |
Output is correct |
2 |
Correct |
175 ms |
300804 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
179 ms |
300868 KB |
Output is correct |
2 |
Correct |
175 ms |
300804 KB |
Output is correct |
3 |
Correct |
178 ms |
300892 KB |
Output is correct |
4 |
Correct |
178 ms |
300856 KB |
Output is correct |
5 |
Correct |
179 ms |
300792 KB |
Output is correct |
6 |
Correct |
179 ms |
300876 KB |
Output is correct |
7 |
Correct |
177 ms |
300856 KB |
Output is correct |
8 |
Correct |
175 ms |
300764 KB |
Output is correct |
9 |
Correct |
177 ms |
300840 KB |
Output is correct |
10 |
Correct |
182 ms |
300820 KB |
Output is correct |
11 |
Correct |
180 ms |
300892 KB |
Output is correct |
12 |
Correct |
173 ms |
300808 KB |
Output is correct |
13 |
Correct |
182 ms |
300840 KB |
Output is correct |
14 |
Correct |
177 ms |
300852 KB |
Output is correct |
15 |
Correct |
180 ms |
300880 KB |
Output is correct |
16 |
Correct |
177 ms |
300800 KB |
Output is correct |
17 |
Correct |
176 ms |
300868 KB |
Output is correct |
18 |
Correct |
179 ms |
300824 KB |
Output is correct |
19 |
Correct |
176 ms |
300796 KB |
Output is correct |
20 |
Correct |
179 ms |
300812 KB |
Output is correct |
21 |
Correct |
179 ms |
300832 KB |
Output is correct |
22 |
Correct |
173 ms |
300792 KB |
Output is correct |
23 |
Correct |
181 ms |
300868 KB |
Output is correct |
24 |
Correct |
176 ms |
301000 KB |
Output is correct |
25 |
Correct |
177 ms |
300880 KB |
Output is correct |
26 |
Correct |
182 ms |
300928 KB |
Output is correct |
27 |
Correct |
175 ms |
300872 KB |
Output is correct |
28 |
Correct |
186 ms |
300776 KB |
Output is correct |
29 |
Correct |
177 ms |
300860 KB |
Output is correct |
30 |
Correct |
175 ms |
300836 KB |
Output is correct |
31 |
Correct |
175 ms |
300840 KB |
Output is correct |
32 |
Correct |
176 ms |
300868 KB |
Output is correct |
33 |
Correct |
180 ms |
300840 KB |
Output is correct |
34 |
Correct |
177 ms |
300812 KB |
Output is correct |
35 |
Correct |
179 ms |
300764 KB |
Output is correct |
36 |
Correct |
179 ms |
300828 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
179 ms |
300868 KB |
Output is correct |
2 |
Correct |
175 ms |
300804 KB |
Output is correct |
3 |
Correct |
175 ms |
300840 KB |
Output is correct |
4 |
Correct |
184 ms |
300844 KB |
Output is correct |
5 |
Correct |
179 ms |
300856 KB |
Output is correct |
6 |
Correct |
184 ms |
300872 KB |
Output is correct |
7 |
Correct |
177 ms |
300868 KB |
Output is correct |
8 |
Correct |
179 ms |
300852 KB |
Output is correct |
9 |
Correct |
175 ms |
300824 KB |
Output is correct |
10 |
Correct |
182 ms |
300952 KB |
Output is correct |
11 |
Correct |
175 ms |
300880 KB |
Output is correct |
12 |
Correct |
184 ms |
300756 KB |
Output is correct |
13 |
Correct |
196 ms |
300776 KB |
Output is correct |
14 |
Correct |
173 ms |
300812 KB |
Output is correct |
15 |
Correct |
178 ms |
300768 KB |
Output is correct |
16 |
Correct |
186 ms |
300824 KB |
Output is correct |
17 |
Correct |
180 ms |
300900 KB |
Output is correct |
18 |
Correct |
188 ms |
301124 KB |
Output is correct |
19 |
Correct |
187 ms |
301136 KB |
Output is correct |
20 |
Correct |
219 ms |
304932 KB |
Output is correct |
21 |
Correct |
231 ms |
304920 KB |
Output is correct |
22 |
Correct |
433 ms |
349004 KB |
Output is correct |
23 |
Correct |
456 ms |
351312 KB |
Output is correct |
24 |
Correct |
436 ms |
349144 KB |
Output is correct |
25 |
Correct |
517 ms |
351020 KB |
Output is correct |
26 |
Correct |
445 ms |
349032 KB |
Output is correct |
27 |
Correct |
451 ms |
351180 KB |
Output is correct |
28 |
Correct |
506 ms |
351196 KB |
Output is correct |
29 |
Correct |
498 ms |
351276 KB |
Output is correct |
30 |
Correct |
504 ms |
351188 KB |
Output is correct |
31 |
Correct |
428 ms |
349056 KB |
Output is correct |
32 |
Correct |
509 ms |
351200 KB |
Output is correct |
33 |
Correct |
534 ms |
351056 KB |
Output is correct |
34 |
Correct |
499 ms |
351268 KB |
Output is correct |
35 |
Correct |
199 ms |
300872 KB |
Output is correct |
36 |
Correct |
185 ms |
300792 KB |
Output is correct |
37 |
Correct |
529 ms |
351172 KB |
Output is correct |
38 |
Correct |
511 ms |
351376 KB |
Output is correct |
39 |
Correct |
491 ms |
351172 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
181 ms |
300816 KB |
Output is correct |
2 |
Correct |
197 ms |
300916 KB |
Output is correct |
3 |
Correct |
183 ms |
300892 KB |
Output is correct |
4 |
Correct |
183 ms |
300760 KB |
Output is correct |
5 |
Correct |
525 ms |
351176 KB |
Output is correct |
6 |
Correct |
551 ms |
351124 KB |
Output is correct |
7 |
Correct |
549 ms |
351152 KB |
Output is correct |
8 |
Correct |
529 ms |
351320 KB |
Output is correct |
9 |
Correct |
548 ms |
351172 KB |
Output is correct |
10 |
Correct |
552 ms |
351268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
179 ms |
300868 KB |
Output is correct |
2 |
Correct |
175 ms |
300804 KB |
Output is correct |
3 |
Correct |
178 ms |
300892 KB |
Output is correct |
4 |
Correct |
178 ms |
300856 KB |
Output is correct |
5 |
Correct |
179 ms |
300792 KB |
Output is correct |
6 |
Correct |
179 ms |
300876 KB |
Output is correct |
7 |
Correct |
177 ms |
300856 KB |
Output is correct |
8 |
Correct |
175 ms |
300764 KB |
Output is correct |
9 |
Correct |
177 ms |
300840 KB |
Output is correct |
10 |
Correct |
182 ms |
300820 KB |
Output is correct |
11 |
Correct |
180 ms |
300892 KB |
Output is correct |
12 |
Correct |
173 ms |
300808 KB |
Output is correct |
13 |
Correct |
182 ms |
300840 KB |
Output is correct |
14 |
Correct |
177 ms |
300852 KB |
Output is correct |
15 |
Correct |
180 ms |
300880 KB |
Output is correct |
16 |
Correct |
177 ms |
300800 KB |
Output is correct |
17 |
Correct |
176 ms |
300868 KB |
Output is correct |
18 |
Correct |
179 ms |
300824 KB |
Output is correct |
19 |
Correct |
176 ms |
300796 KB |
Output is correct |
20 |
Correct |
179 ms |
300812 KB |
Output is correct |
21 |
Correct |
179 ms |
300832 KB |
Output is correct |
22 |
Correct |
173 ms |
300792 KB |
Output is correct |
23 |
Correct |
181 ms |
300868 KB |
Output is correct |
24 |
Correct |
176 ms |
301000 KB |
Output is correct |
25 |
Correct |
177 ms |
300880 KB |
Output is correct |
26 |
Correct |
182 ms |
300928 KB |
Output is correct |
27 |
Correct |
175 ms |
300872 KB |
Output is correct |
28 |
Correct |
186 ms |
300776 KB |
Output is correct |
29 |
Correct |
177 ms |
300860 KB |
Output is correct |
30 |
Correct |
175 ms |
300836 KB |
Output is correct |
31 |
Correct |
175 ms |
300840 KB |
Output is correct |
32 |
Correct |
176 ms |
300868 KB |
Output is correct |
33 |
Correct |
180 ms |
300840 KB |
Output is correct |
34 |
Correct |
177 ms |
300812 KB |
Output is correct |
35 |
Correct |
179 ms |
300764 KB |
Output is correct |
36 |
Correct |
179 ms |
300828 KB |
Output is correct |
37 |
Correct |
186 ms |
300876 KB |
Output is correct |
38 |
Correct |
186 ms |
300820 KB |
Output is correct |
39 |
Correct |
187 ms |
300820 KB |
Output is correct |
40 |
Correct |
197 ms |
300956 KB |
Output is correct |
41 |
Correct |
196 ms |
301184 KB |
Output is correct |
42 |
Correct |
186 ms |
301124 KB |
Output is correct |
43 |
Correct |
188 ms |
301144 KB |
Output is correct |
44 |
Correct |
203 ms |
301092 KB |
Output is correct |
45 |
Correct |
182 ms |
301292 KB |
Output is correct |
46 |
Correct |
195 ms |
301084 KB |
Output is correct |
47 |
Correct |
197 ms |
301124 KB |
Output is correct |
48 |
Correct |
198 ms |
301080 KB |
Output is correct |
49 |
Correct |
178 ms |
301124 KB |
Output is correct |
50 |
Correct |
180 ms |
301212 KB |
Output is correct |
51 |
Correct |
185 ms |
301180 KB |
Output is correct |
52 |
Correct |
189 ms |
301144 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
179 ms |
300868 KB |
Output is correct |
2 |
Correct |
175 ms |
300804 KB |
Output is correct |
3 |
Correct |
178 ms |
300892 KB |
Output is correct |
4 |
Correct |
178 ms |
300856 KB |
Output is correct |
5 |
Correct |
179 ms |
300792 KB |
Output is correct |
6 |
Correct |
179 ms |
300876 KB |
Output is correct |
7 |
Correct |
177 ms |
300856 KB |
Output is correct |
8 |
Correct |
175 ms |
300764 KB |
Output is correct |
9 |
Correct |
177 ms |
300840 KB |
Output is correct |
10 |
Correct |
182 ms |
300820 KB |
Output is correct |
11 |
Correct |
180 ms |
300892 KB |
Output is correct |
12 |
Correct |
173 ms |
300808 KB |
Output is correct |
13 |
Correct |
182 ms |
300840 KB |
Output is correct |
14 |
Correct |
177 ms |
300852 KB |
Output is correct |
15 |
Correct |
180 ms |
300880 KB |
Output is correct |
16 |
Correct |
177 ms |
300800 KB |
Output is correct |
17 |
Correct |
176 ms |
300868 KB |
Output is correct |
18 |
Correct |
179 ms |
300824 KB |
Output is correct |
19 |
Correct |
176 ms |
300796 KB |
Output is correct |
20 |
Correct |
179 ms |
300812 KB |
Output is correct |
21 |
Correct |
179 ms |
300832 KB |
Output is correct |
22 |
Correct |
173 ms |
300792 KB |
Output is correct |
23 |
Correct |
181 ms |
300868 KB |
Output is correct |
24 |
Correct |
176 ms |
301000 KB |
Output is correct |
25 |
Correct |
177 ms |
300880 KB |
Output is correct |
26 |
Correct |
182 ms |
300928 KB |
Output is correct |
27 |
Correct |
175 ms |
300872 KB |
Output is correct |
28 |
Correct |
186 ms |
300776 KB |
Output is correct |
29 |
Correct |
177 ms |
300860 KB |
Output is correct |
30 |
Correct |
175 ms |
300836 KB |
Output is correct |
31 |
Correct |
175 ms |
300840 KB |
Output is correct |
32 |
Correct |
176 ms |
300868 KB |
Output is correct |
33 |
Correct |
180 ms |
300840 KB |
Output is correct |
34 |
Correct |
177 ms |
300812 KB |
Output is correct |
35 |
Correct |
179 ms |
300764 KB |
Output is correct |
36 |
Correct |
179 ms |
300828 KB |
Output is correct |
37 |
Correct |
175 ms |
300840 KB |
Output is correct |
38 |
Correct |
184 ms |
300844 KB |
Output is correct |
39 |
Correct |
179 ms |
300856 KB |
Output is correct |
40 |
Correct |
184 ms |
300872 KB |
Output is correct |
41 |
Correct |
177 ms |
300868 KB |
Output is correct |
42 |
Correct |
179 ms |
300852 KB |
Output is correct |
43 |
Correct |
175 ms |
300824 KB |
Output is correct |
44 |
Correct |
182 ms |
300952 KB |
Output is correct |
45 |
Correct |
175 ms |
300880 KB |
Output is correct |
46 |
Correct |
184 ms |
300756 KB |
Output is correct |
47 |
Correct |
196 ms |
300776 KB |
Output is correct |
48 |
Correct |
173 ms |
300812 KB |
Output is correct |
49 |
Correct |
178 ms |
300768 KB |
Output is correct |
50 |
Correct |
186 ms |
300824 KB |
Output is correct |
51 |
Correct |
180 ms |
300900 KB |
Output is correct |
52 |
Correct |
188 ms |
301124 KB |
Output is correct |
53 |
Correct |
187 ms |
301136 KB |
Output is correct |
54 |
Correct |
219 ms |
304932 KB |
Output is correct |
55 |
Correct |
231 ms |
304920 KB |
Output is correct |
56 |
Correct |
433 ms |
349004 KB |
Output is correct |
57 |
Correct |
456 ms |
351312 KB |
Output is correct |
58 |
Correct |
436 ms |
349144 KB |
Output is correct |
59 |
Correct |
517 ms |
351020 KB |
Output is correct |
60 |
Correct |
445 ms |
349032 KB |
Output is correct |
61 |
Correct |
451 ms |
351180 KB |
Output is correct |
62 |
Correct |
506 ms |
351196 KB |
Output is correct |
63 |
Correct |
498 ms |
351276 KB |
Output is correct |
64 |
Correct |
504 ms |
351188 KB |
Output is correct |
65 |
Correct |
428 ms |
349056 KB |
Output is correct |
66 |
Correct |
509 ms |
351200 KB |
Output is correct |
67 |
Correct |
534 ms |
351056 KB |
Output is correct |
68 |
Correct |
499 ms |
351268 KB |
Output is correct |
69 |
Correct |
199 ms |
300872 KB |
Output is correct |
70 |
Correct |
185 ms |
300792 KB |
Output is correct |
71 |
Correct |
529 ms |
351172 KB |
Output is correct |
72 |
Correct |
511 ms |
351376 KB |
Output is correct |
73 |
Correct |
491 ms |
351172 KB |
Output is correct |
74 |
Correct |
181 ms |
300816 KB |
Output is correct |
75 |
Correct |
197 ms |
300916 KB |
Output is correct |
76 |
Correct |
183 ms |
300892 KB |
Output is correct |
77 |
Correct |
183 ms |
300760 KB |
Output is correct |
78 |
Correct |
525 ms |
351176 KB |
Output is correct |
79 |
Correct |
551 ms |
351124 KB |
Output is correct |
80 |
Correct |
549 ms |
351152 KB |
Output is correct |
81 |
Correct |
529 ms |
351320 KB |
Output is correct |
82 |
Correct |
548 ms |
351172 KB |
Output is correct |
83 |
Correct |
552 ms |
351268 KB |
Output is correct |
84 |
Correct |
186 ms |
300876 KB |
Output is correct |
85 |
Correct |
186 ms |
300820 KB |
Output is correct |
86 |
Correct |
187 ms |
300820 KB |
Output is correct |
87 |
Correct |
197 ms |
300956 KB |
Output is correct |
88 |
Correct |
196 ms |
301184 KB |
Output is correct |
89 |
Correct |
186 ms |
301124 KB |
Output is correct |
90 |
Correct |
188 ms |
301144 KB |
Output is correct |
91 |
Correct |
203 ms |
301092 KB |
Output is correct |
92 |
Correct |
182 ms |
301292 KB |
Output is correct |
93 |
Correct |
195 ms |
301084 KB |
Output is correct |
94 |
Correct |
197 ms |
301124 KB |
Output is correct |
95 |
Correct |
198 ms |
301080 KB |
Output is correct |
96 |
Correct |
178 ms |
301124 KB |
Output is correct |
97 |
Correct |
180 ms |
301212 KB |
Output is correct |
98 |
Correct |
185 ms |
301180 KB |
Output is correct |
99 |
Correct |
189 ms |
301144 KB |
Output is correct |
100 |
Correct |
188 ms |
301140 KB |
Output is correct |
101 |
Correct |
238 ms |
305092 KB |
Output is correct |
102 |
Correct |
242 ms |
305032 KB |
Output is correct |
103 |
Correct |
865 ms |
351128 KB |
Output is correct |
104 |
Correct |
459 ms |
351428 KB |
Output is correct |
105 |
Correct |
493 ms |
349072 KB |
Output is correct |
106 |
Correct |
490 ms |
351164 KB |
Output is correct |
107 |
Correct |
456 ms |
349140 KB |
Output is correct |
108 |
Correct |
442 ms |
351352 KB |
Output is correct |
109 |
Correct |
479 ms |
351180 KB |
Output is correct |
110 |
Correct |
505 ms |
351248 KB |
Output is correct |
111 |
Correct |
539 ms |
351236 KB |
Output is correct |
112 |
Correct |
677 ms |
351416 KB |
Output is correct |
113 |
Correct |
633 ms |
351184 KB |
Output is correct |
114 |
Correct |
523 ms |
351224 KB |
Output is correct |
115 |
Correct |
560 ms |
351232 KB |
Output is correct |