#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
ll INF = 1e9+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "shoes.h"
long long count_swaps(std::vector<int> s){
ll m = s.size();
ll ans = 0;
f(i,0,m){
ll pos = i+1;
while(s[pos] != -s[i]){
pos++;
}
for(ll j = pos-1;j > i;j--){
swap(s[j],s[j+1]);
ans++;
}
if(s[i] > 0){
swap(s[i],s[i+1]);
ans++;
}
i++;
}
return ans;
}
