#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
// #define int long long
typedef long long ll ;
const ll ooo = 1e14 ;
const ll oo = 2e9 ;
const double PI = acos(-1) ;
const ll M = 1e9 + 7 ;
const int N = 400010 ;
int n ;
struct BIT {
int bit[400010];
ll sum(ll i) {
ll ret = 0;
for (++i; i > 0; i -= i & -i)
ret += bit[i];
return ret;
}
void add(ll i, ll v) {
for (++i; i < N; i += i & -i) bit[i] += v;
}
}tree;
vector<pair<int , int>> v[N] , g;
ll count_swaps(vector<int> s) {
n = s.size() / 2;
for(int i = 0 ; i < n * 2 ; ++i)
v[abs(s[i])].push_back({s[i] , i});
ll ans = 0 ;
for(int i = 1 ; i <= n ; ++i){
sort(v[i].begin(), v[i].end());
int sz = v[i].size() / 2;
for(int j = 0 ; j < sz ; ++j){
int l = v[i][j].second + 1;
int r = v[i][j + sz].second + 1;
if(l > r) ans++ , swap(l , r);
g.push_back({l , r});
}
}
sort(g.begin(), g.end());
for(int i = 1; i <= 2 * n ; ++i) tree.add(i , 1);
for(auto x : g){
// cout << x.second << ' ' << x.first << endl;
ans += tree.sum(x.second - 1) - tree.sum(x.first);
tree.add(x.second , -1);
tree.add(x.first , -1);
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 5 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 7 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 8 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 9 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 10 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 11 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 13 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 15 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 16 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 17 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 18 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 19 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 21 |
Correct |
6 ms |
9760 KB |
Output is correct |
| 22 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 26 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 27 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 28 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 29 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 30 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 31 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 32 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 33 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 34 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9728 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 5 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 7 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 8 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 9 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 10 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 11 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 13 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 15 |
Correct |
6 ms |
9704 KB |
Output is correct |
| 16 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 17 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 18 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 19 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
13 ms |
10364 KB |
Output is correct |
| 21 |
Correct |
13 ms |
10364 KB |
Output is correct |
| 22 |
Correct |
70 ms |
15464 KB |
Output is correct |
| 23 |
Correct |
76 ms |
16744 KB |
Output is correct |
| 24 |
Correct |
72 ms |
16744 KB |
Output is correct |
| 25 |
Correct |
60 ms |
16488 KB |
Output is correct |
| 26 |
Correct |
70 ms |
16872 KB |
Output is correct |
| 27 |
Correct |
59 ms |
16488 KB |
Output is correct |
| 28 |
Correct |
70 ms |
16744 KB |
Output is correct |
| 29 |
Correct |
57 ms |
16872 KB |
Output is correct |
| 30 |
Correct |
57 ms |
16744 KB |
Output is correct |
| 31 |
Correct |
69 ms |
16872 KB |
Output is correct |
| 32 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 33 |
Correct |
56 ms |
16488 KB |
Output is correct |
| 34 |
Correct |
60 ms |
16872 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 37 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 38 |
Correct |
60 ms |
16872 KB |
Output is correct |
| 39 |
Correct |
59 ms |
16744 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 5 |
Correct |
85 ms |
16112 KB |
Output is correct |
| 6 |
Correct |
72 ms |
16756 KB |
Output is correct |
| 7 |
Correct |
88 ms |
17408 KB |
Output is correct |
| 8 |
Correct |
64 ms |
16936 KB |
Output is correct |
| 9 |
Correct |
83 ms |
17520 KB |
Output is correct |
| 10 |
Correct |
83 ms |
17132 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 5 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 7 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 8 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 9 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 10 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 11 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 13 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 15 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 16 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 17 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 18 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 19 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 21 |
Correct |
6 ms |
9760 KB |
Output is correct |
| 22 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 26 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 27 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 28 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 29 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 30 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 31 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 32 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 33 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 34 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 37 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 38 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 39 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 40 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 41 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 42 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 43 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 44 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 45 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 46 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 47 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 48 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 49 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 50 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 51 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 52 |
Correct |
7 ms |
9856 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 5 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 7 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 8 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 9 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 10 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 11 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 13 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 15 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 16 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 17 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 18 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 19 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 21 |
Correct |
6 ms |
9760 KB |
Output is correct |
| 22 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 26 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 27 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 28 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 29 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 30 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 31 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 32 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 33 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 34 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 37 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 38 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 39 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 40 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 41 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 42 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 43 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 44 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 45 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 46 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 47 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 48 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 49 |
Correct |
6 ms |
9704 KB |
Output is correct |
| 50 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 51 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 52 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 53 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 54 |
Correct |
13 ms |
10364 KB |
Output is correct |
| 55 |
Correct |
13 ms |
10364 KB |
Output is correct |
| 56 |
Correct |
70 ms |
15464 KB |
Output is correct |
| 57 |
Correct |
76 ms |
16744 KB |
Output is correct |
| 58 |
Correct |
72 ms |
16744 KB |
Output is correct |
| 59 |
Correct |
60 ms |
16488 KB |
Output is correct |
| 60 |
Correct |
70 ms |
16872 KB |
Output is correct |
| 61 |
Correct |
59 ms |
16488 KB |
Output is correct |
| 62 |
Correct |
70 ms |
16744 KB |
Output is correct |
| 63 |
Correct |
57 ms |
16872 KB |
Output is correct |
| 64 |
Correct |
57 ms |
16744 KB |
Output is correct |
| 65 |
Correct |
69 ms |
16872 KB |
Output is correct |
| 66 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 67 |
Correct |
56 ms |
16488 KB |
Output is correct |
| 68 |
Correct |
60 ms |
16872 KB |
Output is correct |
| 69 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 70 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 71 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 72 |
Correct |
60 ms |
16872 KB |
Output is correct |
| 73 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 74 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 75 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 76 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 77 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 78 |
Correct |
85 ms |
16112 KB |
Output is correct |
| 79 |
Correct |
72 ms |
16756 KB |
Output is correct |
| 80 |
Correct |
88 ms |
17408 KB |
Output is correct |
| 81 |
Correct |
64 ms |
16936 KB |
Output is correct |
| 82 |
Correct |
83 ms |
17520 KB |
Output is correct |
| 83 |
Correct |
83 ms |
17132 KB |
Output is correct |
| 84 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 85 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 86 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 87 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 88 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 89 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 90 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 91 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 92 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 93 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 94 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 95 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 96 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 97 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 98 |
Correct |
7 ms |
9728 KB |
Output is correct |
| 99 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 100 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 101 |
Correct |
14 ms |
10624 KB |
Output is correct |
| 102 |
Correct |
14 ms |
10624 KB |
Output is correct |
| 103 |
Correct |
96 ms |
17392 KB |
Output is correct |
| 104 |
Correct |
82 ms |
17396 KB |
Output is correct |
| 105 |
Correct |
86 ms |
16876 KB |
Output is correct |
| 106 |
Correct |
93 ms |
17392 KB |
Output is correct |
| 107 |
Correct |
77 ms |
16624 KB |
Output is correct |
| 108 |
Correct |
74 ms |
16748 KB |
Output is correct |
| 109 |
Correct |
62 ms |
16744 KB |
Output is correct |
| 110 |
Correct |
59 ms |
16744 KB |
Output is correct |
| 111 |
Correct |
85 ms |
17620 KB |
Output is correct |
| 112 |
Correct |
90 ms |
17516 KB |
Output is correct |
| 113 |
Correct |
75 ms |
16752 KB |
Output is correct |
| 114 |
Correct |
83 ms |
17392 KB |
Output is correct |
| 115 |
Correct |
83 ms |
17392 KB |
Output is correct |
