#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; #define fi first #define se second #define vi vector<int> #define vll vector<long long> #define pii pair<int, int> #define pll pair<long long, long long> #define pb push_back #define mp make_pair #define eb emplace_back #define all(x) (x).begin(), (x).end() #define sz(x) (int)(x).size() mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count()); mt19937_64 rng64(chrono::high_resolution_clock::now().time_since_epoch().count()); inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);} inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);} #ifdef DEBUG auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";} auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";} #define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X) #else #define debug(...){} #endif struct custom_hash { static uint64_t splitmix64(uint64_t x) { x += 0x9e3779b97f4a7c15; x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; x = (x ^ (x >> 27)) * 0x94d049bb133111eb; return x ^ (x >> 31); } size_t operator()(uint64_t x) const { static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count(); return splitmix64(x + FIXED_RANDOM); } }; struct pair_hash{ size_t operator()(const pair<int,int>&x)const{ return hash<long long>()(((long long)x.first)^(((long long)x.second)<<32)); } }; const int INF = 2e9 + 7; bool comp(pii& x, pii& y){ if(x.se != y.se){ return x.se < y.se; } return x.fi < y.fi; } vector<pair<pii, int>> solve(vector<pii> a, int n, int k){ if(k == 1){ int mxX = -INF; int mxY = -INF; int mnX = INF; int mnY = INF; for(auto ele : a){ mxX = max(mxX, ele.fi); mnX = min(mnX, ele.fi); mxY = max(mxY, ele.se); mnY = min(mnY, ele.se); } vector<pair<pii, int>> ret = {mp(mp(mnX, mnY), max(1, max(mxX - mnX, mxY - mnY)))}; return ret; } sort(all(a), comp); if(k == 2){ vector<pii> sufX(n + 1, mp(-INF, INF)); vector<pii> sufY(n + 1, mp(-INF, INF)); for(int i = n - 1; i >= 0; i--){ sufX[i].fi = max(sufX[i + 1].fi, a[i].fi); sufX[i].se = min(sufX[i + 1].se, a[i].fi); sufY[i].fi = max(sufY[i + 1].fi, a[i].se); sufY[i].se = min(sufY[i + 1].se, a[i].se); } int mxX = -INF; int mxY = -INF; int mnX = INF; int mnY = INF; int best = INF; // debug(a); vector<pair<pii, int>> ret = {mp(mp(INF, INF), INF), mp(mp(INF, INF), INF)}; for(int i = 0; i < n - 1; i++){ mxX = max(mxX, a[i].fi); mnX = min(mnX, a[i].fi); mxY = max(mxY, a[i].se); mnY = min(mnY, a[i].se); // cerr << "----- " << i << '\n'; // debug(a[i]); // cerr << mxX << ' ' << mnX << ' ' << mxY << ' ' << mnY << '\n'; // debug(sufX[i + 1]); // debug(sufY[i + 1]); if(sufY[i + 1].se == mxY){ continue; } int nbest = max({1, sufX[i + 1].fi - sufX[i + 1].se, sufY[i + 1].fi - sufY[i + 1].se, mxX - mnX, mxY - mnY}); // cerr << nbest << '\n'; if(nbest < best){ best = nbest; ret = {mp(mp(sufX[i + 1].se, sufY[i + 1].se), max({1, sufX[i + 1].fi - sufX[i + 1].se, sufY[i + 1].fi - sufY[i + 1].se}))}; pii upper = mp(mxX, mxY); upper.fi -= max({1, mxX - mnX, mxY - mnY}); upper.se -= max({1, mxX - mnX, mxY - mnY}); ret.pb(mp(upper, max({1, mxX - mnX, mxY - mnY}))); //debug(ret); } } return ret; } } int main(){ ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL); int n, k; cin >> n >> k; vector<pii> a(n); for(int i = 0; i < n; i++){ cin >> a[i].fi >> a[i].se; } vector<pair<pii, int>> res; int best = INF; for(int i = 0; i < 2; i++){ for(int j = 0; j < 2; j++){ vector<pair<pii, int>> curr = solve(a, n, k); int nbest = -INF; for(auto ele : curr){ nbest = max(nbest, ele.se); } if(nbest < best){ res = curr; best = nbest; if(j){ for(auto& ele : curr){ ele.fi.se = -ele.fi.se; } } if(i){ for(auto& ele : curr){ swap(ele.fi.fi, ele.fi.se); } } } for(int j2 = 0; j2 < n; j2++){ a[j2].se = -a[j2].se; } } for(int j = 0; j < n; j++){ swap(a[j].fi, a[j].se); } } for(auto ele : res){ cout << ele.fi.fi << ' ' << ele.fi.se << ' ' << ele.se << '\n'; } return 0; }

izvanzemaljci.cpp: In function 'std::vector<std::pair<std::pair<int, int>, int> > solve(std::vector<std::pair<int, int> >, int, int)':
izvanzemaljci.cpp:120:1: warning: control reaches end of non-void function [-Wreturn-type]
  120 | }
      | ^