#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
bool cmp(pair<int, int> a, pair<int, int> b){
return a.first + a.second < b.first + b.second;
}
long long count_swaps(std::vector<int> s) {
int n = s.size() / 2;
vector<vector<int> > colors[2] = {vector<vector<int> >(n + 1), vector<vector<int> >(n + 1)};
vector<int> ids(2 * n);
vector<int> bit(2 * n + 1);
for(int i = 0; i < 2 * n; i++)
colors[(s[i] < 0) ? 0 : 1][abs(s[i])].push_back(i);
vector<pair<int, int> > ord;
for(int i = 0; i < colors[0].size(); i++)
for(int j = 0; j < colors[0][i].size(); j++)
ord.push_back(make_pair(colors[0][i][j], colors[1][i][j]));
sort(ord.begin(), ord.end(), cmp);
for(int i = 0; i < ord.size(); i++){
ids[ord[i].first] = 2 * i;
ids[ord[i].second] = 2 * i + 1;
}
long long ans = 0;
for(int i = 2 * n - 1; i >= 0; i--){
int id = ids[i] + 1;
while(id > 0){
ans += bit[id];
id -= -id&id;
}
id = ids[i] + 1;
while(id < 2 * n + 1){
bit[id]++;
id += -id&id;
}
}
return ans;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:21:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for(int i = 0; i < colors[0].size(); i++)
| ~~^~~~~~~~~~~~~~~~~~
shoes.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
22 | for(int j = 0; j < colors[0][i].size(); j++)
| ~~^~~~~~~~~~~~~~~~~~~~~
shoes.cpp:26:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for(int i = 0; i < ord.size(); i++){
| ~~^~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
2 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
1 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
204 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
1 ms |
204 KB |
Output is correct |
24 |
Correct |
1 ms |
204 KB |
Output is correct |
25 |
Correct |
2 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
1 ms |
204 KB |
Output is correct |
29 |
Correct |
1 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
1 ms |
204 KB |
Output is correct |
34 |
Correct |
1 ms |
204 KB |
Output is correct |
35 |
Correct |
1 ms |
204 KB |
Output is correct |
36 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
216 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
5 ms |
1356 KB |
Output is correct |
21 |
Correct |
5 ms |
1356 KB |
Output is correct |
22 |
Correct |
45 ms |
10068 KB |
Output is correct |
23 |
Correct |
51 ms |
10012 KB |
Output is correct |
24 |
Correct |
48 ms |
10024 KB |
Output is correct |
25 |
Correct |
45 ms |
10052 KB |
Output is correct |
26 |
Correct |
46 ms |
11284 KB |
Output is correct |
27 |
Correct |
46 ms |
11064 KB |
Output is correct |
28 |
Correct |
44 ms |
11280 KB |
Output is correct |
29 |
Correct |
43 ms |
11324 KB |
Output is correct |
30 |
Correct |
45 ms |
11288 KB |
Output is correct |
31 |
Correct |
50 ms |
11300 KB |
Output is correct |
32 |
Correct |
45 ms |
11300 KB |
Output is correct |
33 |
Correct |
42 ms |
11068 KB |
Output is correct |
34 |
Correct |
45 ms |
11292 KB |
Output is correct |
35 |
Correct |
1 ms |
204 KB |
Output is correct |
36 |
Correct |
1 ms |
204 KB |
Output is correct |
37 |
Correct |
43 ms |
11280 KB |
Output is correct |
38 |
Correct |
44 ms |
11324 KB |
Output is correct |
39 |
Correct |
47 ms |
11324 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
80 ms |
15488 KB |
Output is correct |
6 |
Correct |
62 ms |
11932 KB |
Output is correct |
7 |
Correct |
91 ms |
16760 KB |
Output is correct |
8 |
Correct |
52 ms |
11400 KB |
Output is correct |
9 |
Correct |
85 ms |
16784 KB |
Output is correct |
10 |
Correct |
72 ms |
13596 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
2 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
1 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
204 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
1 ms |
204 KB |
Output is correct |
24 |
Correct |
1 ms |
204 KB |
Output is correct |
25 |
Correct |
2 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
1 ms |
204 KB |
Output is correct |
29 |
Correct |
1 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
1 ms |
204 KB |
Output is correct |
34 |
Correct |
1 ms |
204 KB |
Output is correct |
35 |
Correct |
1 ms |
204 KB |
Output is correct |
36 |
Correct |
1 ms |
204 KB |
Output is correct |
37 |
Correct |
1 ms |
204 KB |
Output is correct |
38 |
Correct |
1 ms |
204 KB |
Output is correct |
39 |
Correct |
1 ms |
204 KB |
Output is correct |
40 |
Correct |
1 ms |
460 KB |
Output is correct |
41 |
Correct |
2 ms |
332 KB |
Output is correct |
42 |
Correct |
2 ms |
332 KB |
Output is correct |
43 |
Correct |
2 ms |
332 KB |
Output is correct |
44 |
Correct |
1 ms |
332 KB |
Output is correct |
45 |
Correct |
1 ms |
332 KB |
Output is correct |
46 |
Correct |
2 ms |
332 KB |
Output is correct |
47 |
Correct |
1 ms |
332 KB |
Output is correct |
48 |
Correct |
1 ms |
332 KB |
Output is correct |
49 |
Correct |
2 ms |
332 KB |
Output is correct |
50 |
Correct |
2 ms |
332 KB |
Output is correct |
51 |
Correct |
1 ms |
332 KB |
Output is correct |
52 |
Correct |
2 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
2 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
1 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
204 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
1 ms |
204 KB |
Output is correct |
24 |
Correct |
1 ms |
204 KB |
Output is correct |
25 |
Correct |
2 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
1 ms |
204 KB |
Output is correct |
29 |
Correct |
1 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
1 ms |
204 KB |
Output is correct |
34 |
Correct |
1 ms |
204 KB |
Output is correct |
35 |
Correct |
1 ms |
204 KB |
Output is correct |
36 |
Correct |
1 ms |
204 KB |
Output is correct |
37 |
Correct |
1 ms |
204 KB |
Output is correct |
38 |
Correct |
1 ms |
204 KB |
Output is correct |
39 |
Correct |
1 ms |
204 KB |
Output is correct |
40 |
Correct |
1 ms |
204 KB |
Output is correct |
41 |
Correct |
1 ms |
204 KB |
Output is correct |
42 |
Correct |
1 ms |
216 KB |
Output is correct |
43 |
Correct |
1 ms |
204 KB |
Output is correct |
44 |
Correct |
1 ms |
204 KB |
Output is correct |
45 |
Correct |
1 ms |
204 KB |
Output is correct |
46 |
Correct |
1 ms |
204 KB |
Output is correct |
47 |
Correct |
1 ms |
204 KB |
Output is correct |
48 |
Correct |
1 ms |
204 KB |
Output is correct |
49 |
Correct |
1 ms |
204 KB |
Output is correct |
50 |
Correct |
1 ms |
204 KB |
Output is correct |
51 |
Correct |
1 ms |
204 KB |
Output is correct |
52 |
Correct |
1 ms |
332 KB |
Output is correct |
53 |
Correct |
1 ms |
332 KB |
Output is correct |
54 |
Correct |
5 ms |
1356 KB |
Output is correct |
55 |
Correct |
5 ms |
1356 KB |
Output is correct |
56 |
Correct |
45 ms |
10068 KB |
Output is correct |
57 |
Correct |
51 ms |
10012 KB |
Output is correct |
58 |
Correct |
48 ms |
10024 KB |
Output is correct |
59 |
Correct |
45 ms |
10052 KB |
Output is correct |
60 |
Correct |
46 ms |
11284 KB |
Output is correct |
61 |
Correct |
46 ms |
11064 KB |
Output is correct |
62 |
Correct |
44 ms |
11280 KB |
Output is correct |
63 |
Correct |
43 ms |
11324 KB |
Output is correct |
64 |
Correct |
45 ms |
11288 KB |
Output is correct |
65 |
Correct |
50 ms |
11300 KB |
Output is correct |
66 |
Correct |
45 ms |
11300 KB |
Output is correct |
67 |
Correct |
42 ms |
11068 KB |
Output is correct |
68 |
Correct |
45 ms |
11292 KB |
Output is correct |
69 |
Correct |
1 ms |
204 KB |
Output is correct |
70 |
Correct |
1 ms |
204 KB |
Output is correct |
71 |
Correct |
43 ms |
11280 KB |
Output is correct |
72 |
Correct |
44 ms |
11324 KB |
Output is correct |
73 |
Correct |
47 ms |
11324 KB |
Output is correct |
74 |
Correct |
1 ms |
204 KB |
Output is correct |
75 |
Correct |
1 ms |
204 KB |
Output is correct |
76 |
Correct |
1 ms |
204 KB |
Output is correct |
77 |
Correct |
1 ms |
204 KB |
Output is correct |
78 |
Correct |
80 ms |
15488 KB |
Output is correct |
79 |
Correct |
62 ms |
11932 KB |
Output is correct |
80 |
Correct |
91 ms |
16760 KB |
Output is correct |
81 |
Correct |
52 ms |
11400 KB |
Output is correct |
82 |
Correct |
85 ms |
16784 KB |
Output is correct |
83 |
Correct |
72 ms |
13596 KB |
Output is correct |
84 |
Correct |
1 ms |
204 KB |
Output is correct |
85 |
Correct |
1 ms |
204 KB |
Output is correct |
86 |
Correct |
1 ms |
204 KB |
Output is correct |
87 |
Correct |
1 ms |
460 KB |
Output is correct |
88 |
Correct |
2 ms |
332 KB |
Output is correct |
89 |
Correct |
2 ms |
332 KB |
Output is correct |
90 |
Correct |
2 ms |
332 KB |
Output is correct |
91 |
Correct |
1 ms |
332 KB |
Output is correct |
92 |
Correct |
1 ms |
332 KB |
Output is correct |
93 |
Correct |
2 ms |
332 KB |
Output is correct |
94 |
Correct |
1 ms |
332 KB |
Output is correct |
95 |
Correct |
1 ms |
332 KB |
Output is correct |
96 |
Correct |
2 ms |
332 KB |
Output is correct |
97 |
Correct |
2 ms |
332 KB |
Output is correct |
98 |
Correct |
1 ms |
332 KB |
Output is correct |
99 |
Correct |
2 ms |
332 KB |
Output is correct |
100 |
Correct |
2 ms |
332 KB |
Output is correct |
101 |
Correct |
8 ms |
1868 KB |
Output is correct |
102 |
Correct |
7 ms |
1484 KB |
Output is correct |
103 |
Correct |
99 ms |
16668 KB |
Output is correct |
104 |
Correct |
99 ms |
16768 KB |
Output is correct |
105 |
Correct |
100 ms |
14012 KB |
Output is correct |
106 |
Correct |
82 ms |
16664 KB |
Output is correct |
107 |
Correct |
67 ms |
12060 KB |
Output is correct |
108 |
Correct |
77 ms |
12484 KB |
Output is correct |
109 |
Correct |
56 ms |
11672 KB |
Output is correct |
110 |
Correct |
43 ms |
11296 KB |
Output is correct |
111 |
Correct |
75 ms |
16060 KB |
Output is correct |
112 |
Correct |
89 ms |
15304 KB |
Output is correct |
113 |
Correct |
70 ms |
12072 KB |
Output is correct |
114 |
Correct |
95 ms |
16764 KB |
Output is correct |
115 |
Correct |
82 ms |
16668 KB |
Output is correct |