#include "shoes.h"
#include <bits/stdc++.h>
#define ll long long
const int MAXN = 1e5 + 5;
using namespace std;
queue<int> pos[MAXN], neg[MAXN];
struct fenwick
{
int n;
vector<int> fn;
void init(int _n)
{
this->n = _n + 1;
fn.resize(n, 0);
}
void update(int x, int y)
{
x++;
while (x < n)
{
fn[x] += y;
x += (x & (-x));
}
}
int sum(int ind)
{
ind++;
int ans = 0;
while (ind)
{
ans += fn[ind];
ind -= (ind & (-ind));
}
return ans;
}
};
ll count_swaps(vector<int> s)
{
int n = s.size() / 2;
for (int i = 0; i < 2 * n; i++)
{
if (s[i] > 0)
pos[s[i]].push(i);
else
neg[-s[i]].push(i);
}
vector<int> vis(2 * n);
fenwick tree;
tree.init((2 * n));
ll ans = 0;
for (int i = 0; i < 2 * n; i++)
{
ll swps = 0;
if (vis[i])
continue;
int nxt = (s[i] > 0 ? neg[s[i]].front() : pos[-s[i]].front());
neg[abs(s[i])].pop();
pos[abs(s[i])].pop();
ans += (nxt - i - (s[i] < 0)) - (tree.sum(nxt) - tree.sum(i));
tree.update(nxt + 1, 1);
vis[i] = 1;
vis[nxt] = 1;
}
return ans;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:53:12: warning: unused variable 'swps' [-Wunused-variable]
53 | ll swps = 0;
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
134924 KB |
Output is correct |
2 |
Correct |
63 ms |
134908 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
134924 KB |
Output is correct |
2 |
Correct |
63 ms |
134908 KB |
Output is correct |
3 |
Correct |
64 ms |
134848 KB |
Output is correct |
4 |
Correct |
69 ms |
134832 KB |
Output is correct |
5 |
Correct |
66 ms |
134924 KB |
Output is correct |
6 |
Correct |
64 ms |
134876 KB |
Output is correct |
7 |
Correct |
66 ms |
134908 KB |
Output is correct |
8 |
Correct |
64 ms |
134804 KB |
Output is correct |
9 |
Correct |
65 ms |
134908 KB |
Output is correct |
10 |
Correct |
66 ms |
134828 KB |
Output is correct |
11 |
Correct |
72 ms |
134852 KB |
Output is correct |
12 |
Correct |
76 ms |
134816 KB |
Output is correct |
13 |
Correct |
65 ms |
134892 KB |
Output is correct |
14 |
Correct |
66 ms |
134860 KB |
Output is correct |
15 |
Correct |
66 ms |
134856 KB |
Output is correct |
16 |
Correct |
69 ms |
134824 KB |
Output is correct |
17 |
Correct |
68 ms |
134864 KB |
Output is correct |
18 |
Correct |
65 ms |
134852 KB |
Output is correct |
19 |
Correct |
65 ms |
134864 KB |
Output is correct |
20 |
Correct |
66 ms |
134824 KB |
Output is correct |
21 |
Correct |
65 ms |
134896 KB |
Output is correct |
22 |
Correct |
69 ms |
134860 KB |
Output is correct |
23 |
Correct |
84 ms |
134840 KB |
Output is correct |
24 |
Correct |
66 ms |
134860 KB |
Output is correct |
25 |
Correct |
70 ms |
134816 KB |
Output is correct |
26 |
Correct |
66 ms |
134920 KB |
Output is correct |
27 |
Correct |
66 ms |
134868 KB |
Output is correct |
28 |
Correct |
66 ms |
134860 KB |
Output is correct |
29 |
Correct |
67 ms |
134876 KB |
Output is correct |
30 |
Correct |
68 ms |
134860 KB |
Output is correct |
31 |
Correct |
65 ms |
134848 KB |
Output is correct |
32 |
Correct |
65 ms |
134888 KB |
Output is correct |
33 |
Correct |
66 ms |
134880 KB |
Output is correct |
34 |
Correct |
66 ms |
134860 KB |
Output is correct |
35 |
Correct |
67 ms |
134860 KB |
Output is correct |
36 |
Correct |
80 ms |
134860 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
134924 KB |
Output is correct |
2 |
Correct |
63 ms |
134908 KB |
Output is correct |
3 |
Correct |
66 ms |
134888 KB |
Output is correct |
4 |
Correct |
66 ms |
134836 KB |
Output is correct |
5 |
Correct |
67 ms |
134860 KB |
Output is correct |
6 |
Correct |
71 ms |
134924 KB |
Output is correct |
7 |
Correct |
67 ms |
134856 KB |
Output is correct |
8 |
Correct |
70 ms |
134848 KB |
Output is correct |
9 |
Correct |
66 ms |
134816 KB |
Output is correct |
10 |
Correct |
67 ms |
134804 KB |
Output is correct |
11 |
Correct |
65 ms |
134916 KB |
Output is correct |
12 |
Correct |
66 ms |
134820 KB |
Output is correct |
13 |
Correct |
65 ms |
134932 KB |
Output is correct |
14 |
Correct |
67 ms |
134908 KB |
Output is correct |
15 |
Correct |
66 ms |
134852 KB |
Output is correct |
16 |
Correct |
65 ms |
134864 KB |
Output is correct |
17 |
Correct |
73 ms |
134868 KB |
Output is correct |
18 |
Correct |
76 ms |
134860 KB |
Output is correct |
19 |
Correct |
72 ms |
134860 KB |
Output is correct |
20 |
Correct |
78 ms |
135292 KB |
Output is correct |
21 |
Correct |
74 ms |
135256 KB |
Output is correct |
22 |
Correct |
94 ms |
138788 KB |
Output is correct |
23 |
Correct |
90 ms |
138792 KB |
Output is correct |
24 |
Correct |
94 ms |
138768 KB |
Output is correct |
25 |
Correct |
108 ms |
138796 KB |
Output is correct |
26 |
Correct |
118 ms |
138904 KB |
Output is correct |
27 |
Correct |
92 ms |
138876 KB |
Output is correct |
28 |
Correct |
106 ms |
138812 KB |
Output is correct |
29 |
Correct |
92 ms |
138908 KB |
Output is correct |
30 |
Correct |
87 ms |
138796 KB |
Output is correct |
31 |
Correct |
88 ms |
138792 KB |
Output is correct |
32 |
Correct |
86 ms |
138920 KB |
Output is correct |
33 |
Correct |
89 ms |
138796 KB |
Output is correct |
34 |
Correct |
90 ms |
138776 KB |
Output is correct |
35 |
Correct |
62 ms |
134860 KB |
Output is correct |
36 |
Correct |
68 ms |
134924 KB |
Output is correct |
37 |
Correct |
90 ms |
138792 KB |
Output is correct |
38 |
Correct |
87 ms |
138788 KB |
Output is correct |
39 |
Correct |
86 ms |
138828 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
72 ms |
134904 KB |
Output is correct |
2 |
Correct |
71 ms |
134912 KB |
Output is correct |
3 |
Correct |
64 ms |
134876 KB |
Output is correct |
4 |
Correct |
66 ms |
134828 KB |
Output is correct |
5 |
Correct |
121 ms |
138024 KB |
Output is correct |
6 |
Correct |
108 ms |
138020 KB |
Output is correct |
7 |
Correct |
122 ms |
137992 KB |
Output is correct |
8 |
Correct |
113 ms |
138872 KB |
Output is correct |
9 |
Correct |
122 ms |
138020 KB |
Output is correct |
10 |
Correct |
108 ms |
138012 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
134924 KB |
Output is correct |
2 |
Correct |
63 ms |
134908 KB |
Output is correct |
3 |
Correct |
64 ms |
134848 KB |
Output is correct |
4 |
Correct |
69 ms |
134832 KB |
Output is correct |
5 |
Correct |
66 ms |
134924 KB |
Output is correct |
6 |
Correct |
64 ms |
134876 KB |
Output is correct |
7 |
Correct |
66 ms |
134908 KB |
Output is correct |
8 |
Correct |
64 ms |
134804 KB |
Output is correct |
9 |
Correct |
65 ms |
134908 KB |
Output is correct |
10 |
Correct |
66 ms |
134828 KB |
Output is correct |
11 |
Correct |
72 ms |
134852 KB |
Output is correct |
12 |
Correct |
76 ms |
134816 KB |
Output is correct |
13 |
Correct |
65 ms |
134892 KB |
Output is correct |
14 |
Correct |
66 ms |
134860 KB |
Output is correct |
15 |
Correct |
66 ms |
134856 KB |
Output is correct |
16 |
Correct |
69 ms |
134824 KB |
Output is correct |
17 |
Correct |
68 ms |
134864 KB |
Output is correct |
18 |
Correct |
65 ms |
134852 KB |
Output is correct |
19 |
Correct |
65 ms |
134864 KB |
Output is correct |
20 |
Correct |
66 ms |
134824 KB |
Output is correct |
21 |
Correct |
65 ms |
134896 KB |
Output is correct |
22 |
Correct |
69 ms |
134860 KB |
Output is correct |
23 |
Correct |
84 ms |
134840 KB |
Output is correct |
24 |
Correct |
66 ms |
134860 KB |
Output is correct |
25 |
Correct |
70 ms |
134816 KB |
Output is correct |
26 |
Correct |
66 ms |
134920 KB |
Output is correct |
27 |
Correct |
66 ms |
134868 KB |
Output is correct |
28 |
Correct |
66 ms |
134860 KB |
Output is correct |
29 |
Correct |
67 ms |
134876 KB |
Output is correct |
30 |
Correct |
68 ms |
134860 KB |
Output is correct |
31 |
Correct |
65 ms |
134848 KB |
Output is correct |
32 |
Correct |
65 ms |
134888 KB |
Output is correct |
33 |
Correct |
66 ms |
134880 KB |
Output is correct |
34 |
Correct |
66 ms |
134860 KB |
Output is correct |
35 |
Correct |
67 ms |
134860 KB |
Output is correct |
36 |
Correct |
80 ms |
134860 KB |
Output is correct |
37 |
Correct |
68 ms |
134924 KB |
Output is correct |
38 |
Correct |
69 ms |
134808 KB |
Output is correct |
39 |
Correct |
69 ms |
134860 KB |
Output is correct |
40 |
Correct |
73 ms |
134844 KB |
Output is correct |
41 |
Correct |
68 ms |
134864 KB |
Output is correct |
42 |
Correct |
66 ms |
134928 KB |
Output is correct |
43 |
Correct |
68 ms |
134880 KB |
Output is correct |
44 |
Correct |
74 ms |
134900 KB |
Output is correct |
45 |
Correct |
65 ms |
134848 KB |
Output is correct |
46 |
Correct |
80 ms |
134932 KB |
Output is correct |
47 |
Correct |
68 ms |
134944 KB |
Output is correct |
48 |
Correct |
65 ms |
134840 KB |
Output is correct |
49 |
Correct |
65 ms |
134924 KB |
Output is correct |
50 |
Correct |
83 ms |
134896 KB |
Output is correct |
51 |
Correct |
68 ms |
134928 KB |
Output is correct |
52 |
Correct |
71 ms |
134836 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
134924 KB |
Output is correct |
2 |
Correct |
63 ms |
134908 KB |
Output is correct |
3 |
Correct |
64 ms |
134848 KB |
Output is correct |
4 |
Correct |
69 ms |
134832 KB |
Output is correct |
5 |
Correct |
66 ms |
134924 KB |
Output is correct |
6 |
Correct |
64 ms |
134876 KB |
Output is correct |
7 |
Correct |
66 ms |
134908 KB |
Output is correct |
8 |
Correct |
64 ms |
134804 KB |
Output is correct |
9 |
Correct |
65 ms |
134908 KB |
Output is correct |
10 |
Correct |
66 ms |
134828 KB |
Output is correct |
11 |
Correct |
72 ms |
134852 KB |
Output is correct |
12 |
Correct |
76 ms |
134816 KB |
Output is correct |
13 |
Correct |
65 ms |
134892 KB |
Output is correct |
14 |
Correct |
66 ms |
134860 KB |
Output is correct |
15 |
Correct |
66 ms |
134856 KB |
Output is correct |
16 |
Correct |
69 ms |
134824 KB |
Output is correct |
17 |
Correct |
68 ms |
134864 KB |
Output is correct |
18 |
Correct |
65 ms |
134852 KB |
Output is correct |
19 |
Correct |
65 ms |
134864 KB |
Output is correct |
20 |
Correct |
66 ms |
134824 KB |
Output is correct |
21 |
Correct |
65 ms |
134896 KB |
Output is correct |
22 |
Correct |
69 ms |
134860 KB |
Output is correct |
23 |
Correct |
84 ms |
134840 KB |
Output is correct |
24 |
Correct |
66 ms |
134860 KB |
Output is correct |
25 |
Correct |
70 ms |
134816 KB |
Output is correct |
26 |
Correct |
66 ms |
134920 KB |
Output is correct |
27 |
Correct |
66 ms |
134868 KB |
Output is correct |
28 |
Correct |
66 ms |
134860 KB |
Output is correct |
29 |
Correct |
67 ms |
134876 KB |
Output is correct |
30 |
Correct |
68 ms |
134860 KB |
Output is correct |
31 |
Correct |
65 ms |
134848 KB |
Output is correct |
32 |
Correct |
65 ms |
134888 KB |
Output is correct |
33 |
Correct |
66 ms |
134880 KB |
Output is correct |
34 |
Correct |
66 ms |
134860 KB |
Output is correct |
35 |
Correct |
67 ms |
134860 KB |
Output is correct |
36 |
Correct |
80 ms |
134860 KB |
Output is correct |
37 |
Correct |
66 ms |
134888 KB |
Output is correct |
38 |
Correct |
66 ms |
134836 KB |
Output is correct |
39 |
Correct |
67 ms |
134860 KB |
Output is correct |
40 |
Correct |
71 ms |
134924 KB |
Output is correct |
41 |
Correct |
67 ms |
134856 KB |
Output is correct |
42 |
Correct |
70 ms |
134848 KB |
Output is correct |
43 |
Correct |
66 ms |
134816 KB |
Output is correct |
44 |
Correct |
67 ms |
134804 KB |
Output is correct |
45 |
Correct |
65 ms |
134916 KB |
Output is correct |
46 |
Correct |
66 ms |
134820 KB |
Output is correct |
47 |
Correct |
65 ms |
134932 KB |
Output is correct |
48 |
Correct |
67 ms |
134908 KB |
Output is correct |
49 |
Correct |
66 ms |
134852 KB |
Output is correct |
50 |
Correct |
65 ms |
134864 KB |
Output is correct |
51 |
Correct |
73 ms |
134868 KB |
Output is correct |
52 |
Correct |
76 ms |
134860 KB |
Output is correct |
53 |
Correct |
72 ms |
134860 KB |
Output is correct |
54 |
Correct |
78 ms |
135292 KB |
Output is correct |
55 |
Correct |
74 ms |
135256 KB |
Output is correct |
56 |
Correct |
94 ms |
138788 KB |
Output is correct |
57 |
Correct |
90 ms |
138792 KB |
Output is correct |
58 |
Correct |
94 ms |
138768 KB |
Output is correct |
59 |
Correct |
108 ms |
138796 KB |
Output is correct |
60 |
Correct |
118 ms |
138904 KB |
Output is correct |
61 |
Correct |
92 ms |
138876 KB |
Output is correct |
62 |
Correct |
106 ms |
138812 KB |
Output is correct |
63 |
Correct |
92 ms |
138908 KB |
Output is correct |
64 |
Correct |
87 ms |
138796 KB |
Output is correct |
65 |
Correct |
88 ms |
138792 KB |
Output is correct |
66 |
Correct |
86 ms |
138920 KB |
Output is correct |
67 |
Correct |
89 ms |
138796 KB |
Output is correct |
68 |
Correct |
90 ms |
138776 KB |
Output is correct |
69 |
Correct |
62 ms |
134860 KB |
Output is correct |
70 |
Correct |
68 ms |
134924 KB |
Output is correct |
71 |
Correct |
90 ms |
138792 KB |
Output is correct |
72 |
Correct |
87 ms |
138788 KB |
Output is correct |
73 |
Correct |
86 ms |
138828 KB |
Output is correct |
74 |
Correct |
72 ms |
134904 KB |
Output is correct |
75 |
Correct |
71 ms |
134912 KB |
Output is correct |
76 |
Correct |
64 ms |
134876 KB |
Output is correct |
77 |
Correct |
66 ms |
134828 KB |
Output is correct |
78 |
Correct |
121 ms |
138024 KB |
Output is correct |
79 |
Correct |
108 ms |
138020 KB |
Output is correct |
80 |
Correct |
122 ms |
137992 KB |
Output is correct |
81 |
Correct |
113 ms |
138872 KB |
Output is correct |
82 |
Correct |
122 ms |
138020 KB |
Output is correct |
83 |
Correct |
108 ms |
138012 KB |
Output is correct |
84 |
Correct |
68 ms |
134924 KB |
Output is correct |
85 |
Correct |
69 ms |
134808 KB |
Output is correct |
86 |
Correct |
69 ms |
134860 KB |
Output is correct |
87 |
Correct |
73 ms |
134844 KB |
Output is correct |
88 |
Correct |
68 ms |
134864 KB |
Output is correct |
89 |
Correct |
66 ms |
134928 KB |
Output is correct |
90 |
Correct |
68 ms |
134880 KB |
Output is correct |
91 |
Correct |
74 ms |
134900 KB |
Output is correct |
92 |
Correct |
65 ms |
134848 KB |
Output is correct |
93 |
Correct |
80 ms |
134932 KB |
Output is correct |
94 |
Correct |
68 ms |
134944 KB |
Output is correct |
95 |
Correct |
65 ms |
134840 KB |
Output is correct |
96 |
Correct |
65 ms |
134924 KB |
Output is correct |
97 |
Correct |
83 ms |
134896 KB |
Output is correct |
98 |
Correct |
68 ms |
134928 KB |
Output is correct |
99 |
Correct |
71 ms |
134836 KB |
Output is correct |
100 |
Correct |
71 ms |
134944 KB |
Output is correct |
101 |
Correct |
70 ms |
135216 KB |
Output is correct |
102 |
Correct |
68 ms |
135204 KB |
Output is correct |
103 |
Correct |
128 ms |
138072 KB |
Output is correct |
104 |
Correct |
121 ms |
138052 KB |
Output is correct |
105 |
Correct |
115 ms |
137956 KB |
Output is correct |
106 |
Correct |
113 ms |
138076 KB |
Output is correct |
107 |
Correct |
105 ms |
138068 KB |
Output is correct |
108 |
Correct |
99 ms |
138072 KB |
Output is correct |
109 |
Correct |
97 ms |
138904 KB |
Output is correct |
110 |
Correct |
91 ms |
138828 KB |
Output is correct |
111 |
Correct |
138 ms |
138060 KB |
Output is correct |
112 |
Correct |
114 ms |
137956 KB |
Output is correct |
113 |
Correct |
102 ms |
138064 KB |
Output is correct |
114 |
Correct |
119 ms |
138060 KB |
Output is correct |
115 |
Correct |
116 ms |
138076 KB |
Output is correct |