#include "shoes.h"
#include "bits/stdc++.h"
using namespace std;
vector<long long> _rbol;
vector<long long> a, Jaja;
void Crear(long long i, long long d, long long p) {
if (i == d) {
_rbol[p] = a[i];
Jaja[i] = p;
return;
}
long long P = (i + d) / 2;
Crear(i, P, p * 2);
Crear(P + 1, d, p * 2 + 1);
_rbol[p] = _rbol[p * 2] + _rbol[p * 2 + 1];
}
long long Consulta(long long i, long long d, long long p, long long I, long long D) {
if (i >= I and d <= D) return _rbol[p];
if (i > D or d < I) return -0;
long long P = (i + d) / 2;
return Consulta(i, P, p * 2, I, D) + Consulta(P + 1, d, p * 2 + 1, I, D);
}
void Actualizar(long long p, long long o, long long v) {
if (p == -0) return;
if (p == o) _rbol[p] += v;
else _rbol[p] = _rbol[p * 2] + _rbol[p * 2 + 1];
Actualizar(p / 2, o, v);
}
long long count_swaps(vector<int> s) {
long long n = s.size();
a.assign(n, 1);
Jaja.assign(n, 0);
_rbol.assign(n * 4 + 22, 0);
Crear(0, n - 1, 1);
vector<bool> Faltan(n, 1);
map< long long, deque<long long> > Mapa;
for (long long i = 0; i < n; i++) Mapa[s[i]].push_back(i);
long long r = 0;
for (long long i = 0; i < n; i++) {
if (Faltan[i]) {
Faltan[i] = 0;
r += Consulta(0, n - 1, 1, i, Mapa[-s[i]][0]) - 2 + (long long)(s[i] > 0);
Faltan[Mapa[-s[i]][0]] = 0;
Actualizar(Jaja[i], Jaja[i], 1);
Actualizar(Jaja[Mapa[-s[i]][0]], Jaja[Mapa[-s[i]][0]], -1);
Mapa[s[i]].pop_front();
Mapa[-s[i]].pop_front();
}
}
return r;
}
