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| #include <bits/stdc++.h>
#pragma optimization_level 3
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
using namespace std;
struct PairHash {
inline std::size_t operator()(const std::pair<int, int> &v) const { return v.first * 31 + v.second; }
};
#define Code ios_base::sync_with_stdio(false);
#define By ios::sync_with_stdio(0);
#define Sumfi cout.tie(NULL);
using ll = long long;
using ld = long double;
const ld PI = 3.14159265358979323846;
const ll INF = 1e18;
const ld EPS = 1e-9;
const ll MAX_N = 2020;
const ll mod = 1e9+7;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef array<ll,3> all3;
typedef array<ll,5> all5;
typedef vector<all3> vall3;
typedef vector<all5> vall5;
typedef vector<ld> vld;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<int> vi;
typedef vector<string> vs;
typedef vector<vs> vvs;
typedef unordered_set<ll> usll;
typedef unordered_set<pll, PairHash> uspll;
typedef unordered_map<ll, ll> umll;
#define rep(i,n) for(ll i=0;i<n;i++)
#define rrep(i,m,n) for(ll i=n;i>=m;i--)
#define all(a) begin(a), end(a)
#define rall(a) rbegin(a), rend(a)
#define pyes cout<<"YES\n";
#define pno cout<<"NO\n";
#define pneg1 cout<<"-1\n";
template <typename T>
void print(T &&t) { cout << t << "\n"; }
template<typename T>
void printv(vector<T>v){ll n=v.size();rep(i,n)cout<<v[i]<<" ";cout<<"\n";}
ll __gcd(ll x, ll y) { return !y ? x : __gcd(y, x % y); }
ll __lcm(ll x, ll y) { return x * y / __gcd(x,y); }
using namespace std;
void insert(unordered_map<string, ll>& hash, pll a, pll b) {
ll dis = abs(a.first - b.first);
string key = to_string(min(a.second, b.second)) + '#' + to_string(max(a.second, b.second));
hash[key] = max(hash[key], dis);
}
ll solve(vpll& A) {
ll n = A.size();
vpll Y, X;
rep(i,n) {
Y.push_back({A[i].first, i});
X.push_back({A[i].second, i});
}
sort(all(Y));
sort(all(X));
unordered_map<string, ll> hash;
insert(hash, Y[0], Y[n-1]);
insert(hash, Y[0], Y[n-2]);
insert(hash, Y[1], Y[n-1]);
insert(hash, X[0], X[n-1]);
insert(hash, X[0], X[n-2]);
insert(hash, X[1], X[n-1]);
priority_queue<ll> pq;
for(auto [_, d] : hash) pq.push(d);
pq.pop();
return pq.top();
}
int main() {
Code By Sumfi
cout.precision(12);
ll tc = 1;
for (ll i = 1; i <= tc; i++) {
ll n;
cin>>n;
vpll A(n);
rep(i,n) cin>>A[i].first>>A[i].second;
print(solve(A));
}
return 0;
}
|
