#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N; pair P[1502020]; void solve() { int i,j,k,l,r,x,y; string s; cin>>N; FOR(i,2*N) { cin>>P[i].first>>P[i].second; } while(1) { ll a=rand()%100000; ll b=rand()%100000; vector C; FOR(i,2*N) { ll c=a*P[i].first+b*P[i].second; C.push_back(-c); } sort(ALL(C)); if(C[N-1]+1