#include<bits/stdc++.h>
using namespace std;
using ll = long long;

//重み付きUnion_Find(XOR)
struct Weighted_dsu {
    public:
    Weighted_dsu() : _n(0) {}
    Weighted_dsu(int n) : _n(n), parent_or_size(n, -1),diff_weight(n,0) {}

    bool merge(int a, int b, int w) {
        int x = leader(a), y = leader(b);
        if(x==y){
            if(diff(a,b)==w)return true;
            return false;
        }
        w ^= diff_weight[a], w ^= diff_weight[b];
        if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y);
        parent_or_size[x] += parent_or_size[y];
        parent_or_size[y] = x;
        diff_weight[y] ^= w;
        return true;
    }
    int diff(int x, int y) {
        leader(x),leader(y);
        return diff_weight[y] ^ diff_weight[x];
    }
    bool same(int a, int b) {
        return leader(a) == leader(b);
    }
    int leader(int a) {
        if (parent_or_size[a] < 0) return a;
        int r = leader(parent_or_size[a]);
        diff_weight[a] ^= diff_weight[parent_or_size[a]];
        return parent_or_size[a] = r;
    }
    int size(int a) {
        return -parent_or_size[leader(a)];
    }
    std::vector<std::vector<int>> groups() {
        std::vector<int> leader_buf(_n), group_size(_n);
        for (int i = 0; i < _n; i++) {
            leader_buf[i] = leader(i);
            group_size[leader_buf[i]]++;
        }
        std::vector<std::vector<int>> result(_n);
        for (int i = 0; i < _n; i++) {
            result[i].reserve(group_size[i]);
        }
        for (int i = 0; i < _n; i++) {
            result[leader_buf[i]].push_back(i);
        }
        result.erase(
            std::remove_if(result.begin(), result.end(),
                           [&](const std::vector<int>& v) { return v.empty(); }),
            result.end());
        return result;
    }
    private:
        int _n;
        std::vector<int> parent_or_size;
        std::vector<int> diff_weight;
};

int main(){
    int n;
    cin >> n;
    if(n >= 10000)return 1;
    vector<pair<int,int>> a(n);
    for(auto &&p:a)cin >> p.first >> p.second;
    auto dist = [&](int i, int j){
        return abs(a[i].first - a[j].first) + abs(a[i].second - a[j].second);
    };
    auto f = [&](int lim){
        Weighted_dsu uf(n);
        for(int i = 0; i < n; i++){
            for(int j = 0; j < i; j++){
                if(dist(i, j) > lim && !uf.merge(i, j, 1))return false;
            }
        }
        return true;
    };
    ll ng = -1, ok = 1ll << 32, mid;
    while(ng + 1 < ok){
        mid = (ng + ok) / 2;
        if(f(mid))ok = mid;
        else ng = mid;
    }
    cout << ok / 2<< '\n';
}