// model solution
#include "shoes.h"
using namespace std;
class Fenwick
{
vector<int> a;
int count(int right)
{
int cnt = 0;
for (; right >= 0; right = (right & (right + 1)) - 1)
{
cnt += a[right];
}
return cnt;
}
public:
explicit Fenwick(int n)
{
a.assign(n, 0);
}
int count(int left, int right)
{
return count(right) - count(left - 1);
}
void put(int index)
{
for (; index < int(a.size()); index = index | (index + 1))
{
a[index]++;
}
}
};
vector<int> create_index(int n, vector<int> &S)
{
vector<int> index(2 * n + 1);
for (int i = 0; i < 2 * n; i++)
{
index[S[i] + n] = i;
}
return index;
}
long long count_adjacent(int n, vector<int> &S)
{
vector<int> index = create_index(n, S);
Fenwick f = Fenwick(2 * n);
long long ans = 0;
for (int i = 0; i < 2 * n; i++)
{
if (S[i] != 0)
{
int pos = index[-S[i] + n];
ans += pos - i - f.count(i, pos) - (S[i] < 0 ? 1 : 0);
S[pos] = 0;
f.put(pos);
}
}
return ans;
}
vector<int> change(vector<int> v) {
int n = (int)v.size() / 2;
vector<int> cnt(n, 0);
for(int i = 0; i < 2*n; i++)
if(v[i] > 0)
cnt[v[i] - 1]++;
for(int i = 1; i < n; i++)
cnt[i] += cnt[i-1];
vector<int> cntl = cnt, cntr = cnt;
for(int i = 0; i < 2*n; i++)
if(v[i] > 0)
v[i] = (--cntr[v[i] - 1]) + 1;
else
v[i] = -((--cntl[-v[i] - 1]) + 1);
return v;
}
long long count_swaps(vector<int> S)
{
S = change(S);
int n = S.size() / 2;
return count_adjacent(n, S);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
252 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
256 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
256 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
0 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
256 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
252 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
6 ms |
632 KB |
Output is correct |
21 |
Correct |
6 ms |
636 KB |
Output is correct |
22 |
Correct |
41 ms |
3832 KB |
Output is correct |
23 |
Correct |
35 ms |
3832 KB |
Output is correct |
24 |
Correct |
41 ms |
3828 KB |
Output is correct |
25 |
Correct |
35 ms |
3864 KB |
Output is correct |
26 |
Correct |
41 ms |
3872 KB |
Output is correct |
27 |
Correct |
33 ms |
3836 KB |
Output is correct |
28 |
Correct |
36 ms |
3832 KB |
Output is correct |
29 |
Correct |
36 ms |
3960 KB |
Output is correct |
30 |
Correct |
36 ms |
3832 KB |
Output is correct |
31 |
Correct |
41 ms |
3832 KB |
Output is correct |
32 |
Correct |
36 ms |
3832 KB |
Output is correct |
33 |
Correct |
35 ms |
3804 KB |
Output is correct |
34 |
Correct |
36 ms |
3832 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
376 KB |
Output is correct |
37 |
Correct |
36 ms |
3832 KB |
Output is correct |
38 |
Correct |
36 ms |
3832 KB |
Output is correct |
39 |
Correct |
37 ms |
3960 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
42 ms |
3832 KB |
Output is correct |
6 |
Correct |
44 ms |
3832 KB |
Output is correct |
7 |
Correct |
41 ms |
3804 KB |
Output is correct |
8 |
Correct |
40 ms |
3960 KB |
Output is correct |
9 |
Correct |
42 ms |
3832 KB |
Output is correct |
10 |
Correct |
42 ms |
3832 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
252 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
256 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
256 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
2 ms |
256 KB |
Output is correct |
38 |
Correct |
2 ms |
256 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
256 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
3 ms |
376 KB |
Output is correct |
43 |
Correct |
2 ms |
376 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
376 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
376 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
252 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
256 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
256 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
2 ms |
256 KB |
Output is correct |
38 |
Correct |
2 ms |
376 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
2 ms |
256 KB |
Output is correct |
43 |
Correct |
0 ms |
376 KB |
Output is correct |
44 |
Correct |
2 ms |
256 KB |
Output is correct |
45 |
Correct |
2 ms |
256 KB |
Output is correct |
46 |
Correct |
2 ms |
256 KB |
Output is correct |
47 |
Correct |
2 ms |
256 KB |
Output is correct |
48 |
Correct |
2 ms |
256 KB |
Output is correct |
49 |
Correct |
2 ms |
256 KB |
Output is correct |
50 |
Correct |
2 ms |
256 KB |
Output is correct |
51 |
Correct |
2 ms |
252 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
6 ms |
632 KB |
Output is correct |
55 |
Correct |
6 ms |
636 KB |
Output is correct |
56 |
Correct |
41 ms |
3832 KB |
Output is correct |
57 |
Correct |
35 ms |
3832 KB |
Output is correct |
58 |
Correct |
41 ms |
3828 KB |
Output is correct |
59 |
Correct |
35 ms |
3864 KB |
Output is correct |
60 |
Correct |
41 ms |
3872 KB |
Output is correct |
61 |
Correct |
33 ms |
3836 KB |
Output is correct |
62 |
Correct |
36 ms |
3832 KB |
Output is correct |
63 |
Correct |
36 ms |
3960 KB |
Output is correct |
64 |
Correct |
36 ms |
3832 KB |
Output is correct |
65 |
Correct |
41 ms |
3832 KB |
Output is correct |
66 |
Correct |
36 ms |
3832 KB |
Output is correct |
67 |
Correct |
35 ms |
3804 KB |
Output is correct |
68 |
Correct |
36 ms |
3832 KB |
Output is correct |
69 |
Correct |
2 ms |
376 KB |
Output is correct |
70 |
Correct |
2 ms |
376 KB |
Output is correct |
71 |
Correct |
36 ms |
3832 KB |
Output is correct |
72 |
Correct |
36 ms |
3832 KB |
Output is correct |
73 |
Correct |
37 ms |
3960 KB |
Output is correct |
74 |
Correct |
2 ms |
256 KB |
Output is correct |
75 |
Correct |
2 ms |
376 KB |
Output is correct |
76 |
Correct |
2 ms |
256 KB |
Output is correct |
77 |
Correct |
2 ms |
376 KB |
Output is correct |
78 |
Correct |
42 ms |
3832 KB |
Output is correct |
79 |
Correct |
44 ms |
3832 KB |
Output is correct |
80 |
Correct |
41 ms |
3804 KB |
Output is correct |
81 |
Correct |
40 ms |
3960 KB |
Output is correct |
82 |
Correct |
42 ms |
3832 KB |
Output is correct |
83 |
Correct |
42 ms |
3832 KB |
Output is correct |
84 |
Correct |
2 ms |
256 KB |
Output is correct |
85 |
Correct |
2 ms |
256 KB |
Output is correct |
86 |
Correct |
2 ms |
376 KB |
Output is correct |
87 |
Correct |
2 ms |
256 KB |
Output is correct |
88 |
Correct |
2 ms |
376 KB |
Output is correct |
89 |
Correct |
3 ms |
376 KB |
Output is correct |
90 |
Correct |
2 ms |
376 KB |
Output is correct |
91 |
Correct |
2 ms |
376 KB |
Output is correct |
92 |
Correct |
2 ms |
376 KB |
Output is correct |
93 |
Correct |
2 ms |
376 KB |
Output is correct |
94 |
Correct |
2 ms |
376 KB |
Output is correct |
95 |
Correct |
2 ms |
376 KB |
Output is correct |
96 |
Correct |
2 ms |
376 KB |
Output is correct |
97 |
Correct |
2 ms |
376 KB |
Output is correct |
98 |
Correct |
2 ms |
376 KB |
Output is correct |
99 |
Correct |
2 ms |
376 KB |
Output is correct |
100 |
Correct |
2 ms |
376 KB |
Output is correct |
101 |
Correct |
7 ms |
632 KB |
Output is correct |
102 |
Correct |
6 ms |
632 KB |
Output is correct |
103 |
Correct |
47 ms |
3828 KB |
Output is correct |
104 |
Correct |
40 ms |
3832 KB |
Output is correct |
105 |
Correct |
49 ms |
3832 KB |
Output is correct |
106 |
Correct |
42 ms |
3828 KB |
Output is correct |
107 |
Correct |
46 ms |
3836 KB |
Output is correct |
108 |
Correct |
42 ms |
3836 KB |
Output is correct |
109 |
Correct |
37 ms |
3832 KB |
Output is correct |
110 |
Correct |
36 ms |
3832 KB |
Output is correct |
111 |
Correct |
41 ms |
3832 KB |
Output is correct |
112 |
Correct |
47 ms |
3868 KB |
Output is correct |
113 |
Correct |
44 ms |
3828 KB |
Output is correct |
114 |
Correct |
41 ms |
3804 KB |
Output is correct |
115 |
Correct |
42 ms |
3832 KB |
Output is correct |