#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 |
