#include <bits/stdc++.h>
#define INF 4611686018427387903ll
#define chmin(x, y) if(x > (y)){ x = (y); }
#define chmax(x, y) if(x < (y)){ x = (y); }
using namespace std;
using ll = long long;


int main(){
    int n;  cin >> n;
    vector<pair<ll, ll> > p(n);
    for(auto&[xp, yp] : p){
        int x, y;   cin >> x >> y;
        xp = x + y, yp = x - y; 
    }

    ll x_min = INF, y_min = INF;
    ll x_max = -INF, y_max = -INF;
    for(auto&[x, y] : p){
        chmin(x_min, x);    chmin(y_min, y);
        chmax(x_max, x);    chmax(y_max, y);
    }

    ll a = 0, b = 0;
    for(auto&[x, y] : p){
        chmax(a, min(max(x_max - x, y_max - y), max(x - x_min, y - y_min)));
        chmax(b, min(max(x_max - x, y - y_min), max(x - x_min, y_max - y)));
    }
    ll ans = min(a, b) / 2;
    cout << ans << endl;

    return 0;
}