#include "shoes.h"
#include <bits/stdc++.h>
#define sz(v) ((int)(v).size())
#define pb push_back
#define ff(j, a, b) for(int j=a;j<b;j++)
using namespace std;
typedef long long ll;
typedef pair<int, int> pint;
const int MAXN = 200005;
struct bit{
int tree[MAXN];
void add(int x, int v){
for(int i=x; i<MAXN; i+=i&-i) tree[i] += v;
}
int query(int x){
int ret = 0;
for(int i=x; i; i-=i&-i) ret += tree[i];
return ret;
}
}bit;
ll count_swaps(vector<int> s) {
int n = s.size() / 2;
ll ret = 0;
vector<pint> v;
vector<pint> ord[MAXN];
ff(i, 0, 2*n)
{
ord[abs(s[i])].pb(pint(s[i], i));
}
ff(i, 1, n+1)
{
sort(ord[i].begin(), ord[i].end());
for(int j=0; j<sz(ord[i])/2; j++){
int l = ord[i][j].second;
int r = ord[i][j + ord[i].size()/2].second;
if(l > r){
swap(l, r);
ret++;
}
v.pb(pint(l + 1, r + 1));
}
}
ff(i, 1, 2*n+1) bit.add(i, 1);
sort(v.begin(), v.end());
for(auto &i : v){
ret += bit.query(i.second - 1) - bit.query(i.first);
bit.add(i.first, -1);
bit.add(i.second, -1);
}
return ret;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
5112 KB |
Output is correct |
8 |
Correct |
6 ms |
5112 KB |
Output is correct |
9 |
Correct |
6 ms |
4984 KB |
Output is correct |
10 |
Correct |
6 ms |
4984 KB |
Output is correct |
11 |
Correct |
6 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
4984 KB |
Output is correct |
15 |
Correct |
6 ms |
4984 KB |
Output is correct |
16 |
Correct |
8 ms |
4984 KB |
Output is correct |
17 |
Correct |
8 ms |
4984 KB |
Output is correct |
18 |
Correct |
6 ms |
5004 KB |
Output is correct |
19 |
Correct |
6 ms |
5112 KB |
Output is correct |
20 |
Correct |
6 ms |
5112 KB |
Output is correct |
21 |
Correct |
6 ms |
5112 KB |
Output is correct |
22 |
Correct |
6 ms |
4984 KB |
Output is correct |
23 |
Correct |
6 ms |
4984 KB |
Output is correct |
24 |
Correct |
6 ms |
5112 KB |
Output is correct |
25 |
Correct |
6 ms |
5112 KB |
Output is correct |
26 |
Correct |
6 ms |
5116 KB |
Output is correct |
27 |
Correct |
6 ms |
5112 KB |
Output is correct |
28 |
Correct |
6 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
5112 KB |
Output is correct |
30 |
Correct |
6 ms |
4984 KB |
Output is correct |
31 |
Correct |
6 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
5112 KB |
Output is correct |
33 |
Correct |
6 ms |
5112 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
5112 KB |
Output is correct |
36 |
Correct |
6 ms |
5112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
5112 KB |
Output is correct |
5 |
Correct |
7 ms |
5112 KB |
Output is correct |
6 |
Correct |
6 ms |
4988 KB |
Output is correct |
7 |
Correct |
8 ms |
4984 KB |
Output is correct |
8 |
Correct |
6 ms |
5112 KB |
Output is correct |
9 |
Correct |
6 ms |
5112 KB |
Output is correct |
10 |
Correct |
6 ms |
5112 KB |
Output is correct |
11 |
Correct |
6 ms |
4984 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
4984 KB |
Output is correct |
15 |
Correct |
6 ms |
4984 KB |
Output is correct |
16 |
Correct |
6 ms |
4984 KB |
Output is correct |
17 |
Correct |
6 ms |
5112 KB |
Output is correct |
18 |
Correct |
7 ms |
5112 KB |
Output is correct |
19 |
Correct |
8 ms |
5112 KB |
Output is correct |
20 |
Correct |
13 ms |
5748 KB |
Output is correct |
21 |
Correct |
12 ms |
5748 KB |
Output is correct |
22 |
Correct |
68 ms |
11052 KB |
Output is correct |
23 |
Correct |
58 ms |
10988 KB |
Output is correct |
24 |
Correct |
71 ms |
10984 KB |
Output is correct |
25 |
Correct |
55 ms |
11072 KB |
Output is correct |
26 |
Correct |
69 ms |
11252 KB |
Output is correct |
27 |
Correct |
57 ms |
11240 KB |
Output is correct |
28 |
Correct |
56 ms |
11240 KB |
Output is correct |
29 |
Correct |
69 ms |
11240 KB |
Output is correct |
30 |
Correct |
61 ms |
11240 KB |
Output is correct |
31 |
Correct |
68 ms |
11368 KB |
Output is correct |
32 |
Correct |
57 ms |
11344 KB |
Output is correct |
33 |
Correct |
55 ms |
11240 KB |
Output is correct |
34 |
Correct |
57 ms |
11224 KB |
Output is correct |
35 |
Correct |
6 ms |
4984 KB |
Output is correct |
36 |
Correct |
6 ms |
5084 KB |
Output is correct |
37 |
Correct |
57 ms |
11240 KB |
Output is correct |
38 |
Correct |
57 ms |
11368 KB |
Output is correct |
39 |
Correct |
57 ms |
11288 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
4984 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
87 ms |
11760 KB |
Output is correct |
6 |
Correct |
75 ms |
11288 KB |
Output is correct |
7 |
Correct |
88 ms |
11960 KB |
Output is correct |
8 |
Correct |
65 ms |
11432 KB |
Output is correct |
9 |
Correct |
85 ms |
11888 KB |
Output is correct |
10 |
Correct |
89 ms |
11756 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
5112 KB |
Output is correct |
8 |
Correct |
6 ms |
5112 KB |
Output is correct |
9 |
Correct |
6 ms |
4984 KB |
Output is correct |
10 |
Correct |
6 ms |
4984 KB |
Output is correct |
11 |
Correct |
6 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
4984 KB |
Output is correct |
15 |
Correct |
6 ms |
4984 KB |
Output is correct |
16 |
Correct |
8 ms |
4984 KB |
Output is correct |
17 |
Correct |
8 ms |
4984 KB |
Output is correct |
18 |
Correct |
6 ms |
5004 KB |
Output is correct |
19 |
Correct |
6 ms |
5112 KB |
Output is correct |
20 |
Correct |
6 ms |
5112 KB |
Output is correct |
21 |
Correct |
6 ms |
5112 KB |
Output is correct |
22 |
Correct |
6 ms |
4984 KB |
Output is correct |
23 |
Correct |
6 ms |
4984 KB |
Output is correct |
24 |
Correct |
6 ms |
5112 KB |
Output is correct |
25 |
Correct |
6 ms |
5112 KB |
Output is correct |
26 |
Correct |
6 ms |
5116 KB |
Output is correct |
27 |
Correct |
6 ms |
5112 KB |
Output is correct |
28 |
Correct |
6 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
5112 KB |
Output is correct |
30 |
Correct |
6 ms |
4984 KB |
Output is correct |
31 |
Correct |
6 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
5112 KB |
Output is correct |
33 |
Correct |
6 ms |
5112 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
5112 KB |
Output is correct |
36 |
Correct |
6 ms |
5112 KB |
Output is correct |
37 |
Correct |
6 ms |
5112 KB |
Output is correct |
38 |
Correct |
6 ms |
5084 KB |
Output is correct |
39 |
Correct |
6 ms |
5112 KB |
Output is correct |
40 |
Correct |
6 ms |
4984 KB |
Output is correct |
41 |
Correct |
7 ms |
5112 KB |
Output is correct |
42 |
Correct |
8 ms |
5112 KB |
Output is correct |
43 |
Correct |
7 ms |
5112 KB |
Output is correct |
44 |
Correct |
7 ms |
5116 KB |
Output is correct |
45 |
Correct |
7 ms |
5112 KB |
Output is correct |
46 |
Correct |
7 ms |
5112 KB |
Output is correct |
47 |
Correct |
7 ms |
5112 KB |
Output is correct |
48 |
Correct |
7 ms |
5112 KB |
Output is correct |
49 |
Correct |
7 ms |
5112 KB |
Output is correct |
50 |
Correct |
7 ms |
5112 KB |
Output is correct |
51 |
Correct |
7 ms |
5116 KB |
Output is correct |
52 |
Correct |
7 ms |
5112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
5112 KB |
Output is correct |
8 |
Correct |
6 ms |
5112 KB |
Output is correct |
9 |
Correct |
6 ms |
4984 KB |
Output is correct |
10 |
Correct |
6 ms |
4984 KB |
Output is correct |
11 |
Correct |
6 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
4984 KB |
Output is correct |
15 |
Correct |
6 ms |
4984 KB |
Output is correct |
16 |
Correct |
8 ms |
4984 KB |
Output is correct |
17 |
Correct |
8 ms |
4984 KB |
Output is correct |
18 |
Correct |
6 ms |
5004 KB |
Output is correct |
19 |
Correct |
6 ms |
5112 KB |
Output is correct |
20 |
Correct |
6 ms |
5112 KB |
Output is correct |
21 |
Correct |
6 ms |
5112 KB |
Output is correct |
22 |
Correct |
6 ms |
4984 KB |
Output is correct |
23 |
Correct |
6 ms |
4984 KB |
Output is correct |
24 |
Correct |
6 ms |
5112 KB |
Output is correct |
25 |
Correct |
6 ms |
5112 KB |
Output is correct |
26 |
Correct |
6 ms |
5116 KB |
Output is correct |
27 |
Correct |
6 ms |
5112 KB |
Output is correct |
28 |
Correct |
6 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
5112 KB |
Output is correct |
30 |
Correct |
6 ms |
4984 KB |
Output is correct |
31 |
Correct |
6 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
5112 KB |
Output is correct |
33 |
Correct |
6 ms |
5112 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
5112 KB |
Output is correct |
36 |
Correct |
6 ms |
5112 KB |
Output is correct |
37 |
Correct |
6 ms |
4984 KB |
Output is correct |
38 |
Correct |
6 ms |
5112 KB |
Output is correct |
39 |
Correct |
7 ms |
5112 KB |
Output is correct |
40 |
Correct |
6 ms |
4988 KB |
Output is correct |
41 |
Correct |
8 ms |
4984 KB |
Output is correct |
42 |
Correct |
6 ms |
5112 KB |
Output is correct |
43 |
Correct |
6 ms |
5112 KB |
Output is correct |
44 |
Correct |
6 ms |
5112 KB |
Output is correct |
45 |
Correct |
6 ms |
4984 KB |
Output is correct |
46 |
Correct |
6 ms |
4984 KB |
Output is correct |
47 |
Correct |
6 ms |
4984 KB |
Output is correct |
48 |
Correct |
6 ms |
4984 KB |
Output is correct |
49 |
Correct |
6 ms |
4984 KB |
Output is correct |
50 |
Correct |
6 ms |
4984 KB |
Output is correct |
51 |
Correct |
6 ms |
5112 KB |
Output is correct |
52 |
Correct |
7 ms |
5112 KB |
Output is correct |
53 |
Correct |
8 ms |
5112 KB |
Output is correct |
54 |
Correct |
13 ms |
5748 KB |
Output is correct |
55 |
Correct |
12 ms |
5748 KB |
Output is correct |
56 |
Correct |
68 ms |
11052 KB |
Output is correct |
57 |
Correct |
58 ms |
10988 KB |
Output is correct |
58 |
Correct |
71 ms |
10984 KB |
Output is correct |
59 |
Correct |
55 ms |
11072 KB |
Output is correct |
60 |
Correct |
69 ms |
11252 KB |
Output is correct |
61 |
Correct |
57 ms |
11240 KB |
Output is correct |
62 |
Correct |
56 ms |
11240 KB |
Output is correct |
63 |
Correct |
69 ms |
11240 KB |
Output is correct |
64 |
Correct |
61 ms |
11240 KB |
Output is correct |
65 |
Correct |
68 ms |
11368 KB |
Output is correct |
66 |
Correct |
57 ms |
11344 KB |
Output is correct |
67 |
Correct |
55 ms |
11240 KB |
Output is correct |
68 |
Correct |
57 ms |
11224 KB |
Output is correct |
69 |
Correct |
6 ms |
4984 KB |
Output is correct |
70 |
Correct |
6 ms |
5084 KB |
Output is correct |
71 |
Correct |
57 ms |
11240 KB |
Output is correct |
72 |
Correct |
57 ms |
11368 KB |
Output is correct |
73 |
Correct |
57 ms |
11288 KB |
Output is correct |
74 |
Correct |
6 ms |
4984 KB |
Output is correct |
75 |
Correct |
6 ms |
4984 KB |
Output is correct |
76 |
Correct |
6 ms |
4984 KB |
Output is correct |
77 |
Correct |
6 ms |
4984 KB |
Output is correct |
78 |
Correct |
87 ms |
11760 KB |
Output is correct |
79 |
Correct |
75 ms |
11288 KB |
Output is correct |
80 |
Correct |
88 ms |
11960 KB |
Output is correct |
81 |
Correct |
65 ms |
11432 KB |
Output is correct |
82 |
Correct |
85 ms |
11888 KB |
Output is correct |
83 |
Correct |
89 ms |
11756 KB |
Output is correct |
84 |
Correct |
6 ms |
5112 KB |
Output is correct |
85 |
Correct |
6 ms |
5084 KB |
Output is correct |
86 |
Correct |
6 ms |
5112 KB |
Output is correct |
87 |
Correct |
6 ms |
4984 KB |
Output is correct |
88 |
Correct |
7 ms |
5112 KB |
Output is correct |
89 |
Correct |
8 ms |
5112 KB |
Output is correct |
90 |
Correct |
7 ms |
5112 KB |
Output is correct |
91 |
Correct |
7 ms |
5116 KB |
Output is correct |
92 |
Correct |
7 ms |
5112 KB |
Output is correct |
93 |
Correct |
7 ms |
5112 KB |
Output is correct |
94 |
Correct |
7 ms |
5112 KB |
Output is correct |
95 |
Correct |
7 ms |
5112 KB |
Output is correct |
96 |
Correct |
7 ms |
5112 KB |
Output is correct |
97 |
Correct |
7 ms |
5112 KB |
Output is correct |
98 |
Correct |
7 ms |
5116 KB |
Output is correct |
99 |
Correct |
7 ms |
5112 KB |
Output is correct |
100 |
Correct |
7 ms |
5112 KB |
Output is correct |
101 |
Correct |
15 ms |
5892 KB |
Output is correct |
102 |
Correct |
15 ms |
5884 KB |
Output is correct |
103 |
Correct |
96 ms |
11760 KB |
Output is correct |
104 |
Correct |
81 ms |
11760 KB |
Output is correct |
105 |
Correct |
88 ms |
11372 KB |
Output is correct |
106 |
Correct |
86 ms |
11740 KB |
Output is correct |
107 |
Correct |
76 ms |
11244 KB |
Output is correct |
108 |
Correct |
74 ms |
11244 KB |
Output is correct |
109 |
Correct |
65 ms |
11112 KB |
Output is correct |
110 |
Correct |
56 ms |
11112 KB |
Output is correct |
111 |
Correct |
91 ms |
11888 KB |
Output is correct |
112 |
Correct |
95 ms |
11864 KB |
Output is correct |
113 |
Correct |
78 ms |
11244 KB |
Output is correct |
114 |
Correct |
90 ms |
11760 KB |
Output is correct |
115 |
Correct |
87 ms |
11760 KB |
Output is correct |