#include "shoes.h"
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define xx first
#define yy second
#define ll(x) (x*2) + 1
#define rr(x) (x*2) + 2
using namespace std;
typedef long long i64;
int n;
bool taken[200010];
vector<int> maap_l[200010], maap_r[200010];
i64 count_swaps(std::vector<int> s) {
i64 ans = 0LL;
n = s.size();
for (int i = n - 1; i >= 0; i--){
if (s[i] < 0) maap_l[s[i] * -1].pb(i);
else maap_r[s[i]].pb(i);
}
for (int i = 0; i < n; i++){
if (!taken[i]){
int tmp;
if (s[i] < 0){
tmp = maap_r[s[i] * -1].back();
maap_r[s[i] * -1].pop_back();
maap_l[s[i] * -1].pop_back();
}
else{
tmp = maap_l[s[i]].back();
maap_l[s[i]].pop_back();
maap_r[s[i]].pop_back();
}
taken[tmp] = 1;
if (s[i] < 0){
ans += tmp - i - 1;
}
else{
ans += tmp - i;
}
for (int j = i; j <= tmp; j++) if (taken[j]) ans--;
}
}
return ans;
}
