#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<LL,LL> pii;
const LL MAXN=100005;
vector<LL> neg[MAXN],pos[MAXN];
pii arr[MAXN];
LL sh[2*MAXN],bit[2*MAXN],n;
void update(LL val){
for(LL i=val;i<=2*n;i+=(i&(-i)))bit[i]++;
}
LL query(LL val){
LL ans=0;
for(LL i=val;i>0;i-=(i&(-i)))ans+=bit[i];
return ans;
}
long long count_swaps(vector<int> s) {
n=(LL)s.size()/2;
for(LL i=0;i<s.size();i++){
if(s[i]<0)neg[abs(s[i])].push_back(i+1);
else pos[s[i]].push_back(i+1);
}
LL now=0;
for(LL i=1;i<=n;i++){
for(int j=0;j<neg[i].size();j++){
now++;
arr[now]={min(neg[i][j],pos[i][j]),max(neg[i][j],pos[i][j])};
}
}
LL ans=0;
sort(arr+1,arr+n+1);
for(LL i=1;i<=n;i++){
if(s[arr[i].first-1]<0){
sh[2*i-1]=arr[i].first;
sh[2*i]=arr[i].second;
}
else{
sh[2*i-1]=arr[i].second;
sh[2*i]=arr[i].first;
}
}
for(LL i=1;i<=2*n;i++){
ans+=(sh[i]-1-query(sh[i]));
update(sh[i]);
}
return ans;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:23:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(LL i=0;i<s.size();i++){
~^~~~~~~~~
shoes.cpp:29:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<neg[i].size();j++){
~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
6 ms |
4984 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 5 |
Correct |
19 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 7 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 8 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 12 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 24 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 25 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
6 ms |
4988 KB |
Output is correct |
| 28 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 29 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 30 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 31 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 33 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 35 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 36 |
Correct |
6 ms |
4984 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
15 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 8 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 11 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5160 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5160 KB |
Output is correct |
| 14 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 15 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5104 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 20 |
Correct |
10 ms |
5880 KB |
Output is correct |
| 21 |
Correct |
10 ms |
5952 KB |
Output is correct |
| 22 |
Correct |
50 ms |
13028 KB |
Output is correct |
| 23 |
Correct |
46 ms |
13028 KB |
Output is correct |
| 24 |
Correct |
39 ms |
13040 KB |
Output is correct |
| 25 |
Correct |
51 ms |
13056 KB |
Output is correct |
| 26 |
Correct |
54 ms |
13000 KB |
Output is correct |
| 27 |
Correct |
44 ms |
13028 KB |
Output is correct |
| 28 |
Correct |
48 ms |
13032 KB |
Output is correct |
| 29 |
Correct |
48 ms |
12908 KB |
Output is correct |
| 30 |
Correct |
49 ms |
13160 KB |
Output is correct |
| 31 |
Correct |
52 ms |
13048 KB |
Output is correct |
| 32 |
Correct |
48 ms |
13008 KB |
Output is correct |
| 33 |
Correct |
49 ms |
12908 KB |
Output is correct |
| 34 |
Correct |
49 ms |
13048 KB |
Output is correct |
| 35 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 36 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 37 |
Correct |
49 ms |
13032 KB |
Output is correct |
| 38 |
Correct |
48 ms |
12908 KB |
Output is correct |
| 39 |
Correct |
48 ms |
13032 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
92 ms |
17528 KB |
Output is correct |
| 6 |
Correct |
74 ms |
13816 KB |
Output is correct |
| 7 |
Correct |
88 ms |
17540 KB |
Output is correct |
| 8 |
Correct |
56 ms |
13488 KB |
Output is correct |
| 9 |
Correct |
89 ms |
17656 KB |
Output is correct |
| 10 |
Correct |
88 ms |
14840 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 5 |
Correct |
19 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 7 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 8 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 12 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 24 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 25 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
6 ms |
4988 KB |
Output is correct |
| 28 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 29 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 30 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 31 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 33 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 35 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 36 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 37 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 38 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 39 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 40 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 41 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 42 |
Correct |
7 ms |
5160 KB |
Output is correct |
| 43 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 44 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 45 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 46 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 47 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 48 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 49 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 50 |
Correct |
6 ms |
5116 KB |
Output is correct |
| 51 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5116 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 5 |
Correct |
19 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 7 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 8 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 12 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 24 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 25 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
6 ms |
4988 KB |
Output is correct |
| 28 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 29 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 30 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 31 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 33 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 35 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 36 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 37 |
Correct |
15 ms |
4984 KB |
Output is correct |
| 38 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 39 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 40 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 41 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 42 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 43 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 44 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 45 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 46 |
Correct |
6 ms |
5160 KB |
Output is correct |
| 47 |
Correct |
6 ms |
5160 KB |
Output is correct |
| 48 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 49 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 50 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 51 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5104 KB |
Output is correct |
| 53 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 54 |
Correct |
10 ms |
5880 KB |
Output is correct |
| 55 |
Correct |
10 ms |
5952 KB |
Output is correct |
| 56 |
Correct |
50 ms |
13028 KB |
Output is correct |
| 57 |
Correct |
46 ms |
13028 KB |
Output is correct |
| 58 |
Correct |
39 ms |
13040 KB |
Output is correct |
| 59 |
Correct |
51 ms |
13056 KB |
Output is correct |
| 60 |
Correct |
54 ms |
13000 KB |
Output is correct |
| 61 |
Correct |
44 ms |
13028 KB |
Output is correct |
| 62 |
Correct |
48 ms |
13032 KB |
Output is correct |
| 63 |
Correct |
48 ms |
12908 KB |
Output is correct |
| 64 |
Correct |
49 ms |
13160 KB |
Output is correct |
| 65 |
Correct |
52 ms |
13048 KB |
Output is correct |
| 66 |
Correct |
48 ms |
13008 KB |
Output is correct |
| 67 |
Correct |
49 ms |
12908 KB |
Output is correct |
| 68 |
Correct |
49 ms |
13048 KB |
Output is correct |
| 69 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 70 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 71 |
Correct |
49 ms |
13032 KB |
Output is correct |
| 72 |
Correct |
48 ms |
12908 KB |
Output is correct |
| 73 |
Correct |
48 ms |
13032 KB |
Output is correct |
| 74 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 75 |
Correct |
7 ms |
4984 KB |
Output is correct |
| 76 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 77 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 78 |
Correct |
92 ms |
17528 KB |
Output is correct |
| 79 |
Correct |
74 ms |
13816 KB |
Output is correct |
| 80 |
Correct |
88 ms |
17540 KB |
Output is correct |
| 81 |
Correct |
56 ms |
13488 KB |
Output is correct |
| 82 |
Correct |
89 ms |
17656 KB |
Output is correct |
| 83 |
Correct |
88 ms |
14840 KB |
Output is correct |
| 84 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 85 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 86 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 87 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 88 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 89 |
Correct |
7 ms |
5160 KB |
Output is correct |
| 90 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 91 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 92 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 93 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 94 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 95 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 96 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 97 |
Correct |
6 ms |
5116 KB |
Output is correct |
| 98 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 99 |
Correct |
7 ms |
5116 KB |
Output is correct |
| 100 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 101 |
Correct |
14 ms |
6264 KB |
Output is correct |
| 102 |
Correct |
13 ms |
6008 KB |
Output is correct |
| 103 |
Correct |
104 ms |
18808 KB |
Output is correct |
| 104 |
Correct |
106 ms |
18808 KB |
Output is correct |
| 105 |
Correct |
98 ms |
16392 KB |
Output is correct |
| 106 |
Correct |
93 ms |
18912 KB |
Output is correct |
| 107 |
Correct |
80 ms |
15312 KB |
Output is correct |
| 108 |
Correct |
79 ms |
15480 KB |
Output is correct |
| 109 |
Correct |
58 ms |
15084 KB |
Output is correct |
| 110 |
Correct |
48 ms |
14188 KB |
Output is correct |
| 111 |
Correct |
91 ms |
18064 KB |
Output is correct |
| 112 |
Correct |
103 ms |
17360 KB |
Output is correct |
| 113 |
Correct |
79 ms |
15224 KB |
Output is correct |
| 114 |
Correct |
91 ms |
18936 KB |
Output is correct |
| 115 |
Correct |
90 ms |
18808 KB |
Output is correct |
