#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
cerr<<vars<<" = ";
string delim="";
(...,(cerr<<delim<<values,delim=", "));
cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif
#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);}
int main(){
cin.sync_with_stdio(0);
cin.tie(0); cout.tie(0);
#ifdef LOCAL
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
#endif
vector<pll> pts;
int n; cin>>n;
for(int i=0;i<n;i++){
int x,y; cin>>x>>y;
pts.pb({abs(x),abs(y)});
}
ll ans=0;
sort(pts.rbegin(),pts.rend());
ll cx=pts[0].first;
ll cy=pts[0].second;
for(int i=1;i<n;i++){
if(4*pts[i].first*pts[i].second+4*cx*cy<4*max(cx,pts[i].first)*max(cy,pts[i].second)){
ans+=4*cx*cy;
cx=pts[i].first;
cy=pts[i].second;
} else{
maxa(cx,pts[i].first);
maxa(cy,pts[i].second);
}
}
cout<<ans+4*cx*cy<<"\n";
}
