#include "shoes.h"
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
const int maxN = 100'000;
vector<int> A[1+maxN];
vector<int> B[1+maxN];
vector<int> actpos;
long long count_swaps(vector<int> S)
{
int N = (int)S.size()/2;
for(int i = 0; i < 2*N; i++)
{
if(S[i] < 0) A[ -S[i] ].push_back(i);
else B[ S[i] ].push_back(i);
}
long long res = 0;
vector< pair<int, int> > X;
for(int s = 1; s <= N; s++)
{
for(int i = 0; i < A[s].size(); i++)
{
if(A[s][i] > B[s][i])
{
swap(A[s][i], B[s][i]);
res++;
}
X.push_back(make_pair(A[s][i], B[s][i]));
}
}
sort(X.begin(), X.end());
actpos = vector<int>(2*N);
int ct = -1;
for(pair<int, int> x: X)
{
actpos[ x.first ] = ++ct;
actpos[ x.second ] = ++ct;
}
vector<int> a_sort(2*N);
for(int i = 0; i < 2*N; i++) a_sort[i] = i;
sort(a_sort.begin(), a_sort.end(), [] (int u, int v)
{
return actpos[u] > actpos[v];
});
vector<int> BIT(1+2*N, 0);
for(int g: a_sort)
{
for(int i = g+1 - 1; i >= 1; i -= i&-i)
res += BIT[i];
for(int i = g+1; i <= 2*N; i += i&-i)
BIT[i]++;
}
return res;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:26:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for(int i = 0; i < A[s].size(); i++)
| ~~^~~~~~~~~~~~~
# |
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 |
4988 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 |
4992 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
5056 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
19 |
Correct |
4 ms |
4988 KB |
Output is correct |
20 |
Correct |
4 ms |
4940 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
4972 KB |
Output is correct |
23 |
Correct |
3 ms |
4888 KB |
Output is correct |
24 |
Correct |
4 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
3 ms |
4940 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
3 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4940 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4940 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 |
4 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 |
4992 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
4 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 |
3 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 |
3 ms |
5068 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4988 KB |
Output is correct |
18 |
Correct |
4 ms |
4996 KB |
Output is correct |
19 |
Correct |
4 ms |
4940 KB |
Output is correct |
20 |
Correct |
8 ms |
5644 KB |
Output is correct |
21 |
Correct |
8 ms |
5580 KB |
Output is correct |
22 |
Correct |
55 ms |
10720 KB |
Output is correct |
23 |
Correct |
51 ms |
10612 KB |
Output is correct |
24 |
Correct |
55 ms |
10712 KB |
Output is correct |
25 |
Correct |
71 ms |
10728 KB |
Output is correct |
26 |
Correct |
65 ms |
10804 KB |
Output is correct |
27 |
Correct |
47 ms |
10704 KB |
Output is correct |
28 |
Correct |
73 ms |
10680 KB |
Output is correct |
29 |
Correct |
72 ms |
10724 KB |
Output is correct |
30 |
Correct |
71 ms |
10724 KB |
Output is correct |
31 |
Correct |
54 ms |
10644 KB |
Output is correct |
32 |
Correct |
86 ms |
10716 KB |
Output is correct |
33 |
Correct |
71 ms |
10680 KB |
Output is correct |
34 |
Correct |
73 ms |
10624 KB |
Output is correct |
35 |
Correct |
3 ms |
4940 KB |
Output is correct |
36 |
Correct |
4 ms |
4920 KB |
Output is correct |
37 |
Correct |
71 ms |
10628 KB |
Output is correct |
38 |
Correct |
82 ms |
10616 KB |
Output is correct |
39 |
Correct |
72 ms |
10616 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 |
4948 KB |
Output is correct |
4 |
Correct |
4 ms |
4940 KB |
Output is correct |
5 |
Correct |
111 ms |
16276 KB |
Output is correct |
6 |
Correct |
97 ms |
11472 KB |
Output is correct |
7 |
Correct |
100 ms |
16292 KB |
Output is correct |
8 |
Correct |
78 ms |
10888 KB |
Output is correct |
9 |
Correct |
102 ms |
16284 KB |
Output is correct |
10 |
Correct |
96 ms |
13268 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 |
4988 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 |
4992 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
5056 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
19 |
Correct |
4 ms |
4988 KB |
Output is correct |
20 |
Correct |
4 ms |
4940 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
4972 KB |
Output is correct |
23 |
Correct |
3 ms |
4888 KB |
Output is correct |
24 |
Correct |
4 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
3 ms |
4940 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
3 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4940 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4940 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 |
4 ms |
4940 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 |
4940 KB |
Output is correct |
40 |
Correct |
4 ms |
4940 KB |
Output is correct |
41 |
Correct |
4 ms |
5068 KB |
Output is correct |
42 |
Correct |
4 ms |
5068 KB |
Output is correct |
43 |
Correct |
4 ms |
5068 KB |
Output is correct |
44 |
Correct |
5 ms |
5068 KB |
Output is correct |
45 |
Correct |
4 ms |
5068 KB |
Output is correct |
46 |
Correct |
4 ms |
5068 KB |
Output is correct |
47 |
Correct |
4 ms |
5068 KB |
Output is correct |
48 |
Correct |
4 ms |
5068 KB |
Output is correct |
49 |
Correct |
4 ms |
5000 KB |
Output is correct |
50 |
Correct |
4 ms |
5068 KB |
Output is correct |
51 |
Correct |
4 ms |
5040 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 |
4988 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 |
4992 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
4 ms |
5056 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
4 ms |
4940 KB |
Output is correct |
16 |
Correct |
4 ms |
4940 KB |
Output is correct |
17 |
Correct |
3 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
19 |
Correct |
4 ms |
4988 KB |
Output is correct |
20 |
Correct |
4 ms |
4940 KB |
Output is correct |
21 |
Correct |
3 ms |
4940 KB |
Output is correct |
22 |
Correct |
3 ms |
4972 KB |
Output is correct |
23 |
Correct |
3 ms |
4888 KB |
Output is correct |
24 |
Correct |
4 ms |
4940 KB |
Output is correct |
25 |
Correct |
4 ms |
4940 KB |
Output is correct |
26 |
Correct |
3 ms |
4940 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
3 ms |
4940 KB |
Output is correct |
30 |
Correct |
3 ms |
4940 KB |
Output is correct |
31 |
Correct |
3 ms |
4940 KB |
Output is correct |
32 |
Correct |
3 ms |
4940 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 |
4 ms |
4940 KB |
Output is correct |
37 |
Correct |
3 ms |
4940 KB |
Output is correct |
38 |
Correct |
3 ms |
4940 KB |
Output is correct |
39 |
Correct |
3 ms |
4992 KB |
Output is correct |
40 |
Correct |
3 ms |
4940 KB |
Output is correct |
41 |
Correct |
4 ms |
4940 KB |
Output is correct |
42 |
Correct |
3 ms |
4940 KB |
Output is correct |
43 |
Correct |
3 ms |
4940 KB |
Output is correct |
44 |
Correct |
3 ms |
4940 KB |
Output is correct |
45 |
Correct |
3 ms |
4940 KB |
Output is correct |
46 |
Correct |
3 ms |
4940 KB |
Output is correct |
47 |
Correct |
3 ms |
4940 KB |
Output is correct |
48 |
Correct |
3 ms |
5068 KB |
Output is correct |
49 |
Correct |
4 ms |
4940 KB |
Output is correct |
50 |
Correct |
4 ms |
4940 KB |
Output is correct |
51 |
Correct |
3 ms |
4988 KB |
Output is correct |
52 |
Correct |
4 ms |
4996 KB |
Output is correct |
53 |
Correct |
4 ms |
4940 KB |
Output is correct |
54 |
Correct |
8 ms |
5644 KB |
Output is correct |
55 |
Correct |
8 ms |
5580 KB |
Output is correct |
56 |
Correct |
55 ms |
10720 KB |
Output is correct |
57 |
Correct |
51 ms |
10612 KB |
Output is correct |
58 |
Correct |
55 ms |
10712 KB |
Output is correct |
59 |
Correct |
71 ms |
10728 KB |
Output is correct |
60 |
Correct |
65 ms |
10804 KB |
Output is correct |
61 |
Correct |
47 ms |
10704 KB |
Output is correct |
62 |
Correct |
73 ms |
10680 KB |
Output is correct |
63 |
Correct |
72 ms |
10724 KB |
Output is correct |
64 |
Correct |
71 ms |
10724 KB |
Output is correct |
65 |
Correct |
54 ms |
10644 KB |
Output is correct |
66 |
Correct |
86 ms |
10716 KB |
Output is correct |
67 |
Correct |
71 ms |
10680 KB |
Output is correct |
68 |
Correct |
73 ms |
10624 KB |
Output is correct |
69 |
Correct |
3 ms |
4940 KB |
Output is correct |
70 |
Correct |
4 ms |
4920 KB |
Output is correct |
71 |
Correct |
71 ms |
10628 KB |
Output is correct |
72 |
Correct |
82 ms |
10616 KB |
Output is correct |
73 |
Correct |
72 ms |
10616 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 |
4948 KB |
Output is correct |
77 |
Correct |
4 ms |
4940 KB |
Output is correct |
78 |
Correct |
111 ms |
16276 KB |
Output is correct |
79 |
Correct |
97 ms |
11472 KB |
Output is correct |
80 |
Correct |
100 ms |
16292 KB |
Output is correct |
81 |
Correct |
78 ms |
10888 KB |
Output is correct |
82 |
Correct |
102 ms |
16284 KB |
Output is correct |
83 |
Correct |
96 ms |
13268 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 |
4940 KB |
Output is correct |
87 |
Correct |
4 ms |
4940 KB |
Output is correct |
88 |
Correct |
4 ms |
5068 KB |
Output is correct |
89 |
Correct |
4 ms |
5068 KB |
Output is correct |
90 |
Correct |
4 ms |
5068 KB |
Output is correct |
91 |
Correct |
5 ms |
5068 KB |
Output is correct |
92 |
Correct |
4 ms |
5068 KB |
Output is correct |
93 |
Correct |
4 ms |
5068 KB |
Output is correct |
94 |
Correct |
4 ms |
5068 KB |
Output is correct |
95 |
Correct |
4 ms |
5068 KB |
Output is correct |
96 |
Correct |
4 ms |
5000 KB |
Output is correct |
97 |
Correct |
4 ms |
5068 KB |
Output is correct |
98 |
Correct |
4 ms |
5040 KB |
Output is correct |
99 |
Correct |
4 ms |
5068 KB |
Output is correct |
100 |
Correct |
4 ms |
5068 KB |
Output is correct |
101 |
Correct |
11 ms |
6060 KB |
Output is correct |
102 |
Correct |
10 ms |
5708 KB |
Output is correct |
103 |
Correct |
99 ms |
17256 KB |
Output is correct |
104 |
Correct |
88 ms |
17332 KB |
Output is correct |
105 |
Correct |
102 ms |
14588 KB |
Output is correct |
106 |
Correct |
119 ms |
17208 KB |
Output is correct |
107 |
Correct |
78 ms |
12668 KB |
Output is correct |
108 |
Correct |
70 ms |
12924 KB |
Output is correct |
109 |
Correct |
85 ms |
12272 KB |
Output is correct |
110 |
Correct |
73 ms |
11864 KB |
Output is correct |
111 |
Correct |
105 ms |
16624 KB |
Output is correct |
112 |
Correct |
107 ms |
15864 KB |
Output is correct |
113 |
Correct |
80 ms |
12608 KB |
Output is correct |
114 |
Correct |
98 ms |
17208 KB |
Output is correct |
115 |
Correct |
109 ms |
17268 KB |
Output is correct |