#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define ll long long
#define ld long double
#define all(_v) _v.begin(), _v.end()
#define sz(_v) (int)_v.size()
#define pii pair <int, int>
#define pll pair <ll, ll>
#define veci vector <int>
#define vecll vector <ll>
const int dx[4] = {1, -1, 0, 0};
const int dy[4] = {0, 0, -1, 1};
const double PI = 3.1415926535897932384626433832795;
const double eps = 1e-9;
const int MOD1 = 1e9 + 7;
const int MOD2 = 998244353;
const int MAXN = 2e5 + 10;
int t[MAXN], n;
vector <pii> pos[MAXN];
void upd(int r, int val) {
for(; r < MAXN; r += r & -r) t[r] += val;
}
int get(int r) {
int res = 0;
for(; r > 0; r -= r & -r) res += t[r];
return res;
}
ll count_swaps(veci b) {
n = sz(b) / 2;
b.insert(b.begin(), 0);
for(int i = 1; i <= 2 * n; ++i) {
upd(i, 1);
int x = b[i];
pos[abs(x)].pb(mp(x, i));
}
ll ans = 0;
vector <pii> seg;
for(int i = 1; i <= n; ++i) {
sort(all(pos[i]));
for(int j = 0; j < sz(pos[i]) / 2; ++j) {
int l = pos[i][j].s, r = pos[i][j + sz(pos[i]) / 2].s;
if(l > r) ++ans, swap(l, r);
seg.pb(mp(l, r));
}
}
sort(all(seg));
for(auto p : seg) {
int l = p.f, r = p.s;
ans += get(r - 1) - get(l);
upd(l, -1);
upd(r, -1);
}
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4940 KB |
Output is correct |
8 |
Correct |
3 ms |
4940 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
5 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
5000 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4988 KB |
Output is correct |
19 |
Correct |
3 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
4992 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
5000 KB |
Output is correct |
23 |
Correct |
3 ms |
4940 KB |
Output is correct |
24 |
Correct |
3 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
5016 KB |
Output is correct |
26 |
Correct |
3 ms |
5028 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
4 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4992 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4992 KB |
Output is correct |
33 |
Correct |
3 ms |
4940 KB |
Output is correct |
34 |
Correct |
3 ms |
4940 KB |
Output is correct |
35 |
Correct |
3 ms |
4940 KB |
Output is correct |
36 |
Correct |
3 ms |
4996 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
4940 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
4 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4940 KB |
Output is correct |
8 |
Correct |
3 ms |
4940 KB |
Output is correct |
9 |
Correct |
4 ms |
4992 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
3 ms |
4992 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
4940 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
4940 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
6 ms |
5068 KB |
Output is correct |
19 |
Correct |
4 ms |
5008 KB |
Output is correct |
20 |
Correct |
9 ms |
5648 KB |
Output is correct |
21 |
Correct |
10 ms |
5696 KB |
Output is correct |
22 |
Correct |
75 ms |
11892 KB |
Output is correct |
23 |
Correct |
52 ms |
11952 KB |
Output is correct |
24 |
Correct |
63 ms |
11868 KB |
Output is correct |
25 |
Correct |
46 ms |
11784 KB |
Output is correct |
26 |
Correct |
74 ms |
11952 KB |
Output is correct |
27 |
Correct |
54 ms |
11696 KB |
Output is correct |
28 |
Correct |
49 ms |
11868 KB |
Output is correct |
29 |
Correct |
50 ms |
11884 KB |
Output is correct |
30 |
Correct |
47 ms |
11896 KB |
Output is correct |
31 |
Correct |
62 ms |
11988 KB |
Output is correct |
32 |
Correct |
52 ms |
11888 KB |
Output is correct |
33 |
Correct |
50 ms |
11704 KB |
Output is correct |
34 |
Correct |
65 ms |
11892 KB |
Output is correct |
35 |
Correct |
4 ms |
5068 KB |
Output is correct |
36 |
Correct |
5 ms |
4940 KB |
Output is correct |
37 |
Correct |
53 ms |
11892 KB |
Output is correct |
38 |
Correct |
50 ms |
11904 KB |
Output is correct |
39 |
Correct |
58 ms |
11884 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
70 ms |
13432 KB |
Output is correct |
6 |
Correct |
61 ms |
12908 KB |
Output is correct |
7 |
Correct |
70 ms |
13412 KB |
Output is correct |
8 |
Correct |
52 ms |
12276 KB |
Output is correct |
9 |
Correct |
97 ms |
13432 KB |
Output is correct |
10 |
Correct |
71 ms |
13308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4940 KB |
Output is correct |
8 |
Correct |
3 ms |
4940 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
5 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
5000 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4988 KB |
Output is correct |
19 |
Correct |
3 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
4992 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
5000 KB |
Output is correct |
23 |
Correct |
3 ms |
4940 KB |
Output is correct |
24 |
Correct |
3 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
5016 KB |
Output is correct |
26 |
Correct |
3 ms |
5028 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
4 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4992 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4992 KB |
Output is correct |
33 |
Correct |
3 ms |
4940 KB |
Output is correct |
34 |
Correct |
3 ms |
4940 KB |
Output is correct |
35 |
Correct |
3 ms |
4940 KB |
Output is correct |
36 |
Correct |
3 ms |
4996 KB |
Output is correct |
37 |
Correct |
3 ms |
4940 KB |
Output is correct |
38 |
Correct |
3 ms |
4940 KB |
Output is correct |
39 |
Correct |
4 ms |
4992 KB |
Output is correct |
40 |
Correct |
4 ms |
4940 KB |
Output is correct |
41 |
Correct |
4 ms |
5000 KB |
Output is correct |
42 |
Correct |
4 ms |
5068 KB |
Output is correct |
43 |
Correct |
4 ms |
5068 KB |
Output is correct |
44 |
Correct |
4 ms |
5004 KB |
Output is correct |
45 |
Correct |
4 ms |
5068 KB |
Output is correct |
46 |
Correct |
4 ms |
5004 KB |
Output is correct |
47 |
Correct |
4 ms |
5068 KB |
Output is correct |
48 |
Correct |
4 ms |
5004 KB |
Output is correct |
49 |
Correct |
5 ms |
5068 KB |
Output is correct |
50 |
Correct |
4 ms |
5068 KB |
Output is correct |
51 |
Correct |
4 ms |
5068 KB |
Output is correct |
52 |
Correct |
4 ms |
5068 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4940 KB |
Output is correct |
8 |
Correct |
3 ms |
4940 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
4 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
5 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
5000 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4988 KB |
Output is correct |
19 |
Correct |
3 ms |
4940 KB |
Output is correct |
20 |
Correct |
4 ms |
4992 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
5000 KB |
Output is correct |
23 |
Correct |
3 ms |
4940 KB |
Output is correct |
24 |
Correct |
3 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
5016 KB |
Output is correct |
26 |
Correct |
3 ms |
5028 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
4 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4992 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4992 KB |
Output is correct |
33 |
Correct |
3 ms |
4940 KB |
Output is correct |
34 |
Correct |
3 ms |
4940 KB |
Output is correct |
35 |
Correct |
3 ms |
4940 KB |
Output is correct |
36 |
Correct |
3 ms |
4996 KB |
Output is correct |
37 |
Correct |
4 ms |
4940 KB |
Output is correct |
38 |
Correct |
4 ms |
4940 KB |
Output is correct |
39 |
Correct |
3 ms |
4940 KB |
Output is correct |
40 |
Correct |
4 ms |
4940 KB |
Output is correct |
41 |
Correct |
3 ms |
4940 KB |
Output is correct |
42 |
Correct |
3 ms |
4940 KB |
Output is correct |
43 |
Correct |
4 ms |
4992 KB |
Output is correct |
44 |
Correct |
3 ms |
4940 KB |
Output is correct |
45 |
Correct |
3 ms |
4992 KB |
Output is correct |
46 |
Correct |
3 ms |
4940 KB |
Output is correct |
47 |
Correct |
4 ms |
4940 KB |
Output is correct |
48 |
Correct |
3 ms |
4940 KB |
Output is correct |
49 |
Correct |
3 ms |
4940 KB |
Output is correct |
50 |
Correct |
3 ms |
4940 KB |
Output is correct |
51 |
Correct |
3 ms |
4940 KB |
Output is correct |
52 |
Correct |
6 ms |
5068 KB |
Output is correct |
53 |
Correct |
4 ms |
5008 KB |
Output is correct |
54 |
Correct |
9 ms |
5648 KB |
Output is correct |
55 |
Correct |
10 ms |
5696 KB |
Output is correct |
56 |
Correct |
75 ms |
11892 KB |
Output is correct |
57 |
Correct |
52 ms |
11952 KB |
Output is correct |
58 |
Correct |
63 ms |
11868 KB |
Output is correct |
59 |
Correct |
46 ms |
11784 KB |
Output is correct |
60 |
Correct |
74 ms |
11952 KB |
Output is correct |
61 |
Correct |
54 ms |
11696 KB |
Output is correct |
62 |
Correct |
49 ms |
11868 KB |
Output is correct |
63 |
Correct |
50 ms |
11884 KB |
Output is correct |
64 |
Correct |
47 ms |
11896 KB |
Output is correct |
65 |
Correct |
62 ms |
11988 KB |
Output is correct |
66 |
Correct |
52 ms |
11888 KB |
Output is correct |
67 |
Correct |
50 ms |
11704 KB |
Output is correct |
68 |
Correct |
65 ms |
11892 KB |
Output is correct |
69 |
Correct |
4 ms |
5068 KB |
Output is correct |
70 |
Correct |
5 ms |
4940 KB |
Output is correct |
71 |
Correct |
53 ms |
11892 KB |
Output is correct |
72 |
Correct |
50 ms |
11904 KB |
Output is correct |
73 |
Correct |
58 ms |
11884 KB |
Output is correct |
74 |
Correct |
4 ms |
4940 KB |
Output is correct |
75 |
Correct |
3 ms |
4940 KB |
Output is correct |
76 |
Correct |
4 ms |
4940 KB |
Output is correct |
77 |
Correct |
3 ms |
4940 KB |
Output is correct |
78 |
Correct |
70 ms |
13432 KB |
Output is correct |
79 |
Correct |
61 ms |
12908 KB |
Output is correct |
80 |
Correct |
70 ms |
13412 KB |
Output is correct |
81 |
Correct |
52 ms |
12276 KB |
Output is correct |
82 |
Correct |
97 ms |
13432 KB |
Output is correct |
83 |
Correct |
71 ms |
13308 KB |
Output is correct |
84 |
Correct |
3 ms |
4940 KB |
Output is correct |
85 |
Correct |
3 ms |
4940 KB |
Output is correct |
86 |
Correct |
4 ms |
4992 KB |
Output is correct |
87 |
Correct |
4 ms |
4940 KB |
Output is correct |
88 |
Correct |
4 ms |
5000 KB |
Output is correct |
89 |
Correct |
4 ms |
5068 KB |
Output is correct |
90 |
Correct |
4 ms |
5068 KB |
Output is correct |
91 |
Correct |
4 ms |
5004 KB |
Output is correct |
92 |
Correct |
4 ms |
5068 KB |
Output is correct |
93 |
Correct |
4 ms |
5004 KB |
Output is correct |
94 |
Correct |
4 ms |
5068 KB |
Output is correct |
95 |
Correct |
4 ms |
5004 KB |
Output is correct |
96 |
Correct |
5 ms |
5068 KB |
Output is correct |
97 |
Correct |
4 ms |
5068 KB |
Output is correct |
98 |
Correct |
4 ms |
5068 KB |
Output is correct |
99 |
Correct |
4 ms |
5068 KB |
Output is correct |
100 |
Correct |
5 ms |
5004 KB |
Output is correct |
101 |
Correct |
9 ms |
5868 KB |
Output is correct |
102 |
Correct |
11 ms |
5772 KB |
Output is correct |
103 |
Correct |
88 ms |
13512 KB |
Output is correct |
104 |
Correct |
88 ms |
13428 KB |
Output is correct |
105 |
Correct |
75 ms |
13040 KB |
Output is correct |
106 |
Correct |
75 ms |
13508 KB |
Output is correct |
107 |
Correct |
64 ms |
12840 KB |
Output is correct |
108 |
Correct |
65 ms |
12852 KB |
Output is correct |
109 |
Correct |
56 ms |
12144 KB |
Output is correct |
110 |
Correct |
49 ms |
11968 KB |
Output is correct |
111 |
Correct |
81 ms |
13620 KB |
Output is correct |
112 |
Correct |
85 ms |
13564 KB |
Output is correct |
113 |
Correct |
63 ms |
12932 KB |
Output is correct |
114 |
Correct |
73 ms |
13524 KB |
Output is correct |
115 |
Correct |
70 ms |
13424 KB |
Output is correct |