#include <bits/stdc++.h>
#include "shoes.h"
using namespace std;
using ll = long long;
using vi = vector<long long>;
#define pb emplace_back
long long count_swaps(vector<int> s) {
int n = (s.size());
ll ans = 0;
int change[n] = {};
set<int> L[n + 5], R[n + 5];
bool done[n] = {};
for(int i = 0; i < n; ++i) {
if(s[i] < 0) {
L[-s[i]].insert(i);
} else {
R[s[i]].insert(i);
}
}
for(int i = 0; i < n; ++i) {
if(done[i]) continue;
if(s[i] < 0) {
L[-s[i]].erase(L[-s[i]].begin());
auto it = *R[-s[i]].begin();
for(int j = i; j <= it; ++j) {
ans += change[j];
}
done[it] = true;
for(int j = i + 1; j <= it; ++j) {
++change[j];
}
R[-s[i]].erase(R[-s[i]].begin());
} else {
++ans;
R[s[i]].erase(R[s[i]].begin());
auto it = *L[s[i]].begin();
for(int j = i; j <= it; ++j) {
ans += change[j];
}
done[it] = true;
for(int j = i + 1; j <= it; ++j) {
++change[j];
}
L[s[i]].erase(L[s[i]].begin());
}
}
return ans;
}
