#include using namespace std; typedef long long ll; templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b #define vl vector #define vii vector> #define vll vector> #define vvi vector> #define vvl vector> #define vvii vector>> #define vvll vector>> #define vst vector #define pii pair #define pll pair #define pb push_back #define all(x) (x).begin(),(x).end() #define mkunique(x) sort(all(x));(x).erase(unique(all(x)),(x).end()) #define fi first #define se second #define mp make_pair #define si(x) int(x.size()) const int mod=998244353,MAX=300005,INF=15<<26; int main(){ std::ifstream in("text.txt"); std::cin.rdbuf(in.rdbuf()); cin.tie(0); ios::sync_with_stdio(false); ll N;cin>>N; vll S(N+N); for(int i=0;i>S[i].fi>>S[i].se; } mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); while(1){ ll a=rng()%(200001); if(a<0) a+=200001; a-=100000; ll b=rng()%(200001); if(b<0) b+=200001; b-=100000; ll l=-20000000001,r=20000000001; while(r-l>1){ ll m=(l+r)/2; ll cn=0; for(int i=0;i=N) l=m; else r=m; } if(l>=-20000000000){ ll cn=0; bool ok=true; for(int i=0;i