#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef int ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=1e5+5;
const ll K=350;
const ld pi=acos(-1);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()
ll bit[N];
queue<ll> m[4*N];
void ins(ll id,ll del){
++id;
for(;id;id+=(id&-id)){
bit[id]+=del;
}
}
ll q(ll id){
++id;
ll sum=0;
for(;id;id-=(id&-id)){
sum+=bit[id];
}
return sum;
}
long long count_swaps(vector<int> s){
long long ans=0;
ll n=SZ(s);
REP(i,n){
if(SZ(m[-s[i]+n])){
ans-=(q(i)-q(m[-s[i]+n].front()));
ans+=i-m[-s[i]+n].front()-1+(s[i]<0?1:0);
ins(m[-s[i]+n].front(),-1);
m[-s[i]+n].pop();
}else{
ins(i,1);
m[s[i]+n].push(i);
}
}
return ans;
}
