#include "shoes.h"
using namespace std;
#define MAXN 100000
int a[2 * MAXN];
int shoes[2 * MAXN];
int index[2 * MAXN + 1];
int cnt[MAXN], cntl[MAXN];
int N;
void clear_array(int *ar, int n) {
for (int i = 0; i < n; i++)
ar[i] = 0;
}
void copy_arr(int *a1, vector <int> a2, int n) {
for (int i = 0; i < n; i++)
a1[i] = a2[i];
}
void copy_arr(int *a1, int *a2, int n) {
for (int i = 0; i < n; i++)
a1[i] = a2[i];
}
class BIT
{
int count(int right)
{
int cnt = 0;
for (; right >= 0; right = (right & (right + 1)) - 1)
{
cnt += a[right];
}
return cnt;
}
public:
BIT()
{
clear_array(a, 2 * N);
}
int count(int left, int right)
{
return count(right) - count(left - 1);
}
void insert(int index)
{
for (; index < 2 * N; index = index | (index + 1))
{
a[index]++;
}
}
};
void create_index()
{
clear_array(index, 2 * N + 1);
for (int i = 0; i < 2 * N; i++)
{
index[shoes[i] + N] = i;
}
}
long long count_swaps()
{
create_index();
BIT f = BIT();
long long ans = 0;
for (int i = 0; i < 2 * N; i++)
{
if (shoes[i] != 0)
{
int pos = index[-shoes[i] + N];
ans += pos - i - f.count(i, pos) - (shoes[i] < 0 ? 1 : 0);
shoes[pos] = 0;
f.insert(pos);
}
}
return ans;
}
void convert(vector<int> v) {
clear_array(cnt, N);
copy_arr(shoes, v, 2 * N);
for (int i = 0; i < 2 * N; i++)
if (shoes[i] > 0)
cnt[shoes[i] - 1]++;
for (int i = 1; i < N; i++)
cnt[i] += cnt[i - 1];
copy_arr(cntl, cnt, N);
for (int i = 0; i < 2 * N; i++)
if (shoes[i] > 0)
shoes[i] = (--cntl[shoes[i] - 1]) + 1;
else
shoes[i] = -((--cnt[-shoes[i] - 1]) + 1);
}
long long count_swaps(vector<int> S)
{
N = S.size() / 2;
convert(S);
return count_swaps();
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
0 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
384 KB |
Output is correct |
| 23 |
Correct |
0 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
0 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
0 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
512 KB |
Output is correct |
| 34 |
Correct |
0 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
512 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
0 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
0 ms |
364 KB |
Output is correct |
| 11 |
Correct |
0 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
0 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
4 ms |
976 KB |
Output is correct |
| 21 |
Correct |
4 ms |
976 KB |
Output is correct |
| 22 |
Correct |
41 ms |
4940 KB |
Output is correct |
| 23 |
Correct |
37 ms |
4940 KB |
Output is correct |
| 24 |
Correct |
41 ms |
4940 KB |
Output is correct |
| 25 |
Correct |
34 ms |
5068 KB |
Output is correct |
| 26 |
Correct |
39 ms |
4940 KB |
Output is correct |
| 27 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 28 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 29 |
Correct |
35 ms |
4948 KB |
Output is correct |
| 30 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 31 |
Correct |
39 ms |
4940 KB |
Output is correct |
| 32 |
Correct |
35 ms |
5068 KB |
Output is correct |
| 33 |
Correct |
34 ms |
5068 KB |
Output is correct |
| 34 |
Correct |
43 ms |
4940 KB |
Output is correct |
| 35 |
Correct |
1 ms |
492 KB |
Output is correct |
| 36 |
Correct |
0 ms |
364 KB |
Output is correct |
| 37 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 38 |
Correct |
41 ms |
5068 KB |
Output is correct |
| 39 |
Correct |
35 ms |
4940 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 6 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 7 |
Correct |
42 ms |
5068 KB |
Output is correct |
| 8 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 9 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 10 |
Correct |
38 ms |
4960 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
0 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
384 KB |
Output is correct |
| 23 |
Correct |
0 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
0 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
0 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
512 KB |
Output is correct |
| 34 |
Correct |
0 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
512 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
0 ms |
364 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
0 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
0 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
384 KB |
Output is correct |
| 23 |
Correct |
0 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
0 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
0 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
512 KB |
Output is correct |
| 34 |
Correct |
0 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
512 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
0 ms |
364 KB |
Output is correct |
| 38 |
Correct |
0 ms |
364 KB |
Output is correct |
| 39 |
Correct |
0 ms |
364 KB |
Output is correct |
| 40 |
Correct |
0 ms |
364 KB |
Output is correct |
| 41 |
Correct |
0 ms |
364 KB |
Output is correct |
| 42 |
Correct |
0 ms |
364 KB |
Output is correct |
| 43 |
Correct |
0 ms |
364 KB |
Output is correct |
| 44 |
Correct |
0 ms |
364 KB |
Output is correct |
| 45 |
Correct |
0 ms |
364 KB |
Output is correct |
| 46 |
Correct |
0 ms |
364 KB |
Output is correct |
| 47 |
Correct |
0 ms |
364 KB |
Output is correct |
| 48 |
Correct |
0 ms |
364 KB |
Output is correct |
| 49 |
Correct |
0 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
492 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
1 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
4 ms |
976 KB |
Output is correct |
| 55 |
Correct |
4 ms |
976 KB |
Output is correct |
| 56 |
Correct |
41 ms |
4940 KB |
Output is correct |
| 57 |
Correct |
37 ms |
4940 KB |
Output is correct |
| 58 |
Correct |
41 ms |
4940 KB |
Output is correct |
| 59 |
Correct |
34 ms |
5068 KB |
Output is correct |
| 60 |
Correct |
39 ms |
4940 KB |
Output is correct |
| 61 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 62 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 63 |
Correct |
35 ms |
4948 KB |
Output is correct |
| 64 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 65 |
Correct |
39 ms |
4940 KB |
Output is correct |
| 66 |
Correct |
35 ms |
5068 KB |
Output is correct |
| 67 |
Correct |
34 ms |
5068 KB |
Output is correct |
| 68 |
Correct |
43 ms |
4940 KB |
Output is correct |
| 69 |
Correct |
1 ms |
492 KB |
Output is correct |
| 70 |
Correct |
0 ms |
364 KB |
Output is correct |
| 71 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 72 |
Correct |
41 ms |
5068 KB |
Output is correct |
| 73 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 74 |
Correct |
1 ms |
364 KB |
Output is correct |
| 75 |
Correct |
0 ms |
364 KB |
Output is correct |
| 76 |
Correct |
0 ms |
364 KB |
Output is correct |
| 77 |
Correct |
1 ms |
364 KB |
Output is correct |
| 78 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 79 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 80 |
Correct |
42 ms |
5068 KB |
Output is correct |
| 81 |
Correct |
35 ms |
4940 KB |
Output is correct |
| 82 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 83 |
Correct |
38 ms |
4960 KB |
Output is correct |
| 84 |
Correct |
0 ms |
364 KB |
Output is correct |
| 85 |
Correct |
1 ms |
364 KB |
Output is correct |
| 86 |
Correct |
0 ms |
364 KB |
Output is correct |
| 87 |
Correct |
1 ms |
364 KB |
Output is correct |
| 88 |
Correct |
1 ms |
364 KB |
Output is correct |
| 89 |
Correct |
1 ms |
364 KB |
Output is correct |
| 90 |
Correct |
1 ms |
364 KB |
Output is correct |
| 91 |
Correct |
1 ms |
364 KB |
Output is correct |
| 92 |
Correct |
1 ms |
364 KB |
Output is correct |
| 93 |
Correct |
1 ms |
364 KB |
Output is correct |
| 94 |
Correct |
1 ms |
364 KB |
Output is correct |
| 95 |
Correct |
1 ms |
364 KB |
Output is correct |
| 96 |
Correct |
1 ms |
364 KB |
Output is correct |
| 97 |
Correct |
1 ms |
364 KB |
Output is correct |
| 98 |
Correct |
1 ms |
364 KB |
Output is correct |
| 99 |
Correct |
1 ms |
364 KB |
Output is correct |
| 100 |
Correct |
1 ms |
364 KB |
Output is correct |
| 101 |
Correct |
4 ms |
976 KB |
Output is correct |
| 102 |
Correct |
4 ms |
976 KB |
Output is correct |
| 103 |
Correct |
42 ms |
4940 KB |
Output is correct |
| 104 |
Correct |
37 ms |
5068 KB |
Output is correct |
| 105 |
Correct |
43 ms |
4940 KB |
Output is correct |
| 106 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 107 |
Correct |
42 ms |
4940 KB |
Output is correct |
| 108 |
Correct |
37 ms |
4940 KB |
Output is correct |
| 109 |
Correct |
36 ms |
4960 KB |
Output is correct |
| 110 |
Correct |
38 ms |
5068 KB |
Output is correct |
| 111 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 112 |
Correct |
41 ms |
5068 KB |
Output is correct |
| 113 |
Correct |
42 ms |
4940 KB |
Output is correct |
| 114 |
Correct |
36 ms |
4940 KB |
Output is correct |
| 115 |
Correct |
36 ms |
4940 KB |
Output is correct |
