#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<ll> tree;
void add(int v, int l, int r, int ind) {
if (ind < l || ind >= r) {
return;
}
tree[v] += 1;
if (l + 1 != r) {
int m = l + (r - l) / 2;
add(2 * v + 1, l, m, ind);
add(2 * v + 2, m, r, ind);
}
}
ll get(int v, int l, int r, int ql, int qr) {
if (r <= ql || qr <= l) {
return 0;
}
if (ql <= l && r <= qr) {
return tree[v];
}
int m = l + (r - l) / 2;
return get(2 * v + 1, l, m, ql, qr) +
get(2 * v + 2, m, r, ql, qr);
}
ll count_swaps(vector<int> a) {
int n = a.size() / 2;
ll ans = 0;
map<int, vector<int>> last;
vector<int> pr(2 * n, -1);
for (int i = 2 * n - 1; i >= 0; i--) {
last[a[i]].push_back(i);
}
for (int i = 0; i < 2 * n; i++) {
if (pr[i] != -1)
continue;
pr[i] = last[-a[i]].back();;
last[-a[i]].pop_back();
last[a[i]].pop_back();
ans += abs(pr[i] - i) - 1;
if ((pr[i] > i) != (a[pr[i]] > a[i])) {
ans++;
}
pr[pr[i]] = i;
}
vector<vector<int>> q;
for (int i = 0; i < 2 * n; i++) {
q.push_back({i});
if (pr[i] > i) {
// count pr[j] > pr[i] | j in [i, pr[i]]
q.push_back({i, pr[i] + 1, -1});
q.push_back({pr[i], pr[i] + 1, 1});
}
}
tree.resize(8 * n);
sort(q.begin(), q.end());
for (auto &el : q) {
if (el.size() == 1) {
add(0, 0, 2 * n, pr[el[0]]);
} else {
int x = get(0, 0, 2 * n, el[1], 2 * n);
ans -= x * el[2];
}
}
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
4 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
4 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
4 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
4 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
4 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
256 KB |
Output is correct |
34 |
Correct |
5 ms |
376 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
4 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
4 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
4 ms |
296 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
376 KB |
Output is correct |
17 |
Correct |
5 ms |
376 KB |
Output is correct |
18 |
Correct |
6 ms |
632 KB |
Output is correct |
19 |
Correct |
6 ms |
632 KB |
Output is correct |
20 |
Correct |
19 ms |
3500 KB |
Output is correct |
21 |
Correct |
19 ms |
3500 KB |
Output is correct |
22 |
Correct |
158 ms |
31704 KB |
Output is correct |
23 |
Correct |
139 ms |
31684 KB |
Output is correct |
24 |
Correct |
149 ms |
31592 KB |
Output is correct |
25 |
Correct |
163 ms |
31820 KB |
Output is correct |
26 |
Correct |
160 ms |
32960 KB |
Output is correct |
27 |
Correct |
138 ms |
32712 KB |
Output is correct |
28 |
Correct |
167 ms |
32972 KB |
Output is correct |
29 |
Correct |
167 ms |
32968 KB |
Output is correct |
30 |
Correct |
160 ms |
32968 KB |
Output is correct |
31 |
Correct |
165 ms |
32860 KB |
Output is correct |
32 |
Correct |
163 ms |
32968 KB |
Output is correct |
33 |
Correct |
166 ms |
32712 KB |
Output is correct |
34 |
Correct |
163 ms |
32972 KB |
Output is correct |
35 |
Correct |
5 ms |
376 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
159 ms |
32968 KB |
Output is correct |
38 |
Correct |
167 ms |
32968 KB |
Output is correct |
39 |
Correct |
170 ms |
33132 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
4 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
424 KB |
Output is correct |
5 |
Correct |
494 ms |
52828 KB |
Output is correct |
6 |
Correct |
256 ms |
34788 KB |
Output is correct |
7 |
Correct |
468 ms |
54032 KB |
Output is correct |
8 |
Correct |
173 ms |
32968 KB |
Output is correct |
9 |
Correct |
455 ms |
54024 KB |
Output is correct |
10 |
Correct |
357 ms |
43148 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
4 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
4 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
4 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
4 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
4 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
256 KB |
Output is correct |
34 |
Correct |
5 ms |
376 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
4 ms |
256 KB |
Output is correct |
38 |
Correct |
5 ms |
376 KB |
Output is correct |
39 |
Correct |
5 ms |
376 KB |
Output is correct |
40 |
Correct |
5 ms |
504 KB |
Output is correct |
41 |
Correct |
7 ms |
888 KB |
Output is correct |
42 |
Correct |
7 ms |
760 KB |
Output is correct |
43 |
Correct |
7 ms |
760 KB |
Output is correct |
44 |
Correct |
7 ms |
760 KB |
Output is correct |
45 |
Correct |
7 ms |
760 KB |
Output is correct |
46 |
Correct |
6 ms |
760 KB |
Output is correct |
47 |
Correct |
7 ms |
760 KB |
Output is correct |
48 |
Correct |
7 ms |
632 KB |
Output is correct |
49 |
Correct |
6 ms |
632 KB |
Output is correct |
50 |
Correct |
6 ms |
632 KB |
Output is correct |
51 |
Correct |
6 ms |
632 KB |
Output is correct |
52 |
Correct |
7 ms |
760 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
4 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
4 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
4 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
4 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
4 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
256 KB |
Output is correct |
34 |
Correct |
5 ms |
376 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
5 ms |
256 KB |
Output is correct |
38 |
Correct |
4 ms |
256 KB |
Output is correct |
39 |
Correct |
5 ms |
256 KB |
Output is correct |
40 |
Correct |
5 ms |
256 KB |
Output is correct |
41 |
Correct |
5 ms |
256 KB |
Output is correct |
42 |
Correct |
5 ms |
256 KB |
Output is correct |
43 |
Correct |
5 ms |
256 KB |
Output is correct |
44 |
Correct |
5 ms |
256 KB |
Output is correct |
45 |
Correct |
4 ms |
256 KB |
Output is correct |
46 |
Correct |
5 ms |
256 KB |
Output is correct |
47 |
Correct |
4 ms |
296 KB |
Output is correct |
48 |
Correct |
5 ms |
256 KB |
Output is correct |
49 |
Correct |
5 ms |
256 KB |
Output is correct |
50 |
Correct |
5 ms |
376 KB |
Output is correct |
51 |
Correct |
5 ms |
376 KB |
Output is correct |
52 |
Correct |
6 ms |
632 KB |
Output is correct |
53 |
Correct |
6 ms |
632 KB |
Output is correct |
54 |
Correct |
19 ms |
3500 KB |
Output is correct |
55 |
Correct |
19 ms |
3500 KB |
Output is correct |
56 |
Correct |
158 ms |
31704 KB |
Output is correct |
57 |
Correct |
139 ms |
31684 KB |
Output is correct |
58 |
Correct |
149 ms |
31592 KB |
Output is correct |
59 |
Correct |
163 ms |
31820 KB |
Output is correct |
60 |
Correct |
160 ms |
32960 KB |
Output is correct |
61 |
Correct |
138 ms |
32712 KB |
Output is correct |
62 |
Correct |
167 ms |
32972 KB |
Output is correct |
63 |
Correct |
167 ms |
32968 KB |
Output is correct |
64 |
Correct |
160 ms |
32968 KB |
Output is correct |
65 |
Correct |
165 ms |
32860 KB |
Output is correct |
66 |
Correct |
163 ms |
32968 KB |
Output is correct |
67 |
Correct |
166 ms |
32712 KB |
Output is correct |
68 |
Correct |
163 ms |
32972 KB |
Output is correct |
69 |
Correct |
5 ms |
376 KB |
Output is correct |
70 |
Correct |
5 ms |
256 KB |
Output is correct |
71 |
Correct |
159 ms |
32968 KB |
Output is correct |
72 |
Correct |
167 ms |
32968 KB |
Output is correct |
73 |
Correct |
170 ms |
33132 KB |
Output is correct |
74 |
Correct |
5 ms |
256 KB |
Output is correct |
75 |
Correct |
5 ms |
256 KB |
Output is correct |
76 |
Correct |
4 ms |
256 KB |
Output is correct |
77 |
Correct |
5 ms |
424 KB |
Output is correct |
78 |
Correct |
494 ms |
52828 KB |
Output is correct |
79 |
Correct |
256 ms |
34788 KB |
Output is correct |
80 |
Correct |
468 ms |
54032 KB |
Output is correct |
81 |
Correct |
173 ms |
32968 KB |
Output is correct |
82 |
Correct |
455 ms |
54024 KB |
Output is correct |
83 |
Correct |
357 ms |
43148 KB |
Output is correct |
84 |
Correct |
4 ms |
256 KB |
Output is correct |
85 |
Correct |
5 ms |
376 KB |
Output is correct |
86 |
Correct |
5 ms |
376 KB |
Output is correct |
87 |
Correct |
5 ms |
504 KB |
Output is correct |
88 |
Correct |
7 ms |
888 KB |
Output is correct |
89 |
Correct |
7 ms |
760 KB |
Output is correct |
90 |
Correct |
7 ms |
760 KB |
Output is correct |
91 |
Correct |
7 ms |
760 KB |
Output is correct |
92 |
Correct |
7 ms |
760 KB |
Output is correct |
93 |
Correct |
6 ms |
760 KB |
Output is correct |
94 |
Correct |
7 ms |
760 KB |
Output is correct |
95 |
Correct |
7 ms |
632 KB |
Output is correct |
96 |
Correct |
6 ms |
632 KB |
Output is correct |
97 |
Correct |
6 ms |
632 KB |
Output is correct |
98 |
Correct |
6 ms |
632 KB |
Output is correct |
99 |
Correct |
7 ms |
760 KB |
Output is correct |
100 |
Correct |
7 ms |
888 KB |
Output is correct |
101 |
Correct |
34 ms |
5420 KB |
Output is correct |
102 |
Correct |
29 ms |
4008 KB |
Output is correct |
103 |
Correct |
604 ms |
54156 KB |
Output is correct |
104 |
Correct |
427 ms |
54028 KB |
Output is correct |
105 |
Correct |
440 ms |
44556 KB |
Output is correct |
106 |
Correct |
482 ms |
54028 KB |
Output is correct |
107 |
Correct |
263 ms |
35280 KB |
Output is correct |
108 |
Correct |
257 ms |
37456 KB |
Output is correct |
109 |
Correct |
168 ms |
33164 KB |
Output is correct |
110 |
Correct |
175 ms |
32972 KB |
Output is correct |
111 |
Correct |
444 ms |
51596 KB |
Output is correct |
112 |
Correct |
514 ms |
49164 KB |
Output is correct |
113 |
Correct |
334 ms |
35560 KB |
Output is correct |
114 |
Correct |
472 ms |
54028 KB |
Output is correct |
115 |
Correct |
507 ms |
54140 KB |
Output is correct |