#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define rand() (rand() | rand() << 16)
#define LSB(x) ((x) & -(x))
struct Pt { int x, y; };
int c1(Pt p) { return - p.x + p.y; }
int c2(Pt p) { return + p.x - p.y; }
int c3(Pt p) { return - p.x - p.y; }
int c4(Pt p) { return + p.x + p.y; }
int d1(Pt p) { return + p.x + p.y; }
int d2(Pt p) { return + p.x + p.y; }
int d3(Pt p) { return - p.x + p.y; }
int d4(Pt p) { return - p.x + p.y; }
char* pi = new char[10000000];
unsigned int ru() {
while (!isdigit(*pi)) {
pi++;
}
int r = 0;
while (isdigit(*pi)) {
r *= 10;
r += *pi - '0';
pi++;
}
return r;
}
vector<Pt> v;
int cmpy(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
if (a.y > b.y) {
return -1;
}
else if (a.y < b.y) {
return 1;
}
else {
return 0;
}
}
int cmpxl(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
if (a.x < b.x) {
return -1;
}
else if (a.x > b.x) {
return 1;
}
else {
return 0;
}
}
int cmpxh(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
if (a.x > b.x) {
return -1;
}
else if (a.x < b.x) {
return 1;
}
else {
return 0;
}
}
int cmp1(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
int ca = c1(a);
int cb = c1(b);
if (ca < cb) {
return -1;
}
else if (ca > cb) {
return 1;
}
else {
return 0;
}
}
int cmp2(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
int ca = c2(a);
int cb = c2(b);
if (ca < cb) {
return -1;
}
else if (ca > cb) {
return 1;
}
else {
return 0;
}
}
int cmp3(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
int ca = c3(a);
int cb = c3(b);
if (ca < cb) {
return -1;
}
else if (ca > cb) {
return 1;
}
else {
return 0;
}
}
int cmp4(const void* _a, const void* _b) {
Pt a = v[*(int*)_a];
Pt b = v[*(int*)_b];
int ca = c4(a);
int cb = c4(b);
if (ca < cb) {
return -1;
}
else if (ca > cb) {
return 1;
}
else {
return 0;
}
}
int main() {
fread(pi, 10000000, 1, stdin);
// fread(pi, 10000000, 1, fopen("be2.txt", "r"));
int N = ru();
v.resize(N);
vector<vector<pii>> g(N);
for (int i = 0; i < N; i++) {
v[i].x = ru();
v[i].y = ru();
g[i].reserve(8);
}
vector<int> w(N);
iota(w.begin(), w.end(), 0);
vector<vector<int>> f(N + 1);
vector<vector<int>> t(N + 1);
// octant 1
qsort(w.data(), w.size(), sizeof(int), cmpy);
for (int i = 1; i <= N; i++) {
int s = i - LSB(i);
int e = i;
f[i].assign(w.begin() + s, w.begin() + e);
t[i].resize(e - s);
qsort(f[i].data(), f[i].size(), sizeof(int), cmp1);
for (int j = 0, m = 0; j < e - s; j++) {
if (d1(v[f[i][j]]) < d1(v[f[i][m]])) {
m = j;
}
t[i][j] = f[i][m];
}
}
for (int i = 0; i < N; i++) {
int l = i, h = N - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (v[w[m]].y == v[w[i]].y) {
l = m;
}
else {
h = m - 1;
}
}
int r = -1;
for (int j = l; j > 0; j -= LSB(j)) {
l = -1, h = f[j].size() - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (c1(v[f[j][m]]) < c1(v[w[i]])) {
l = m;
}
else {
h = m - 1;
}
}
if (l >= 0 && (r == -1 || d1(v[t[j][l]]) < d1(v[r]))) {
r = t[j][l];
}
}
if (r != -1) {
int d = d1(v[r]) - d1(v[w[i]]);
g[w[i]].push_back({r, d});
g[r].push_back({w[i], d});
}
}
// octant 4
for (int i = 1; i <= N; i++) {
int s = i - LSB(i);
int e = i;
qsort(f[i].data(), f[i].size(), sizeof(int), cmp4);
for (int j = 0, m = 0; j < e - s; j++) {
if (d4(v[f[i][j]]) < d4(v[f[i][m]])) {
m = j;
}
t[i][j] = f[i][m];
}
}
for (int i = 0; i < N; i++) {
int l = i, h;
int r = -1;
for (int j = l; j > 0; j -= LSB(j)) {
l = -1, h = f[j].size() - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (c4(v[f[j][m]]) <= c4(v[w[i]])) {
l = m;
}
else {
h = m - 1;
}
}
if (l >= 0 && (r == -1 || d4(v[t[j][l]]) < d4(v[r]))) {
r = t[j][l];
}
}
if (r != -1) {
int d = d4(v[r]) - d4(v[w[i]]);
g[w[i]].push_back({r, d});
g[r].push_back({w[i], d});
}
}
// octant 2
qsort(w.data(), w.size(), sizeof(int), cmpxh);
for (int i = 1; i <= N; i++) {
int s = i - LSB(i);
int e = i;
copy(w.begin() + s, w.begin() + e, f[i].begin());
qsort(f[i].data(), f[i].size(), sizeof(int), cmp2);
for (int j = 0, m = 0; j < e - s; j++) {
if (d2(v[f[i][j]]) < d2(v[f[i][m]])) {
m = j;
}
t[i][j] = f[i][m];
}
}
for (int i = 0; i < N; i++) {
int l = i, h;
int r = -1;
for (int j = l; j > 0; j -= LSB(j)) {
l = -1, h = f[j].size() - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (c2(v[f[j][m]]) <= c2(v[w[i]])) {
l = m;
}
else {
h = m - 1;
}
}
if (l >= 0 && (r == -1 || d2(v[t[j][l]]) < d2(v[r]))) {
r = t[j][l];
}
}
if (r != -1) {
int d = d2(v[r]) - d2(v[w[i]]);
g[w[i]].push_back({r, d});
g[r].push_back({w[i], d});
}
}
// octant 3
qsort(w.data(), w.size(), sizeof(int), cmpxl);
for (int i = 1; i <= N; i++) {
int s = i - LSB(i);
int e = i;
copy(w.begin() + s, w.begin() + e, f[i].begin());
qsort(f[i].data(), f[i].size(), sizeof(int), cmp3);
for (int j = 0, m = 0; j < e - s; j++) {
if (d3(v[f[i][j]]) < d3(v[f[i][m]])) {
m = j;
}
t[i][j] = f[i][m];
}
}
for (int i = 0; i < N; i++) {
int l = i, h = N - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (v[w[m]].x == v[w[i]].x) {
l = m;
}
else {
h = m - 1;
}
}
int r = -1;
for (int j = l; j > 0; j -= LSB(j)) {
l = -1, h = f[j].size() - 1;
while (l != h) {
int m = (l + h + 1) / 2;
if (c3(v[f[j][m]]) < c3(v[w[i]])) {
l = m;
}
else {
h = m - 1;
}
}
if (l >= 0 && (r == -1 || d3(v[t[j][l]]) < d3(v[r]))) {
r = t[j][l];
}
}
if (r != -1) {
int d = d3(v[r]) - d3(v[w[i]]);
g[w[i]].push_back({r, d});
g[r].push_back({w[i], d});
}
}
int ans = 0;
vector<bool> vis(N);
set<pii> s;
s.insert({0, 0});
while (!s.empty()) {
auto a = *s.begin();
s.erase(s.begin());
if (vis[a.second]) {
continue;
}
vis[a.second] = true;
ans = max(ans, a.first);
for (auto p : g[a.second]) {
if (!vis[p.first]) {
s.insert({p.second, p.first});
}
}
}
cout << ans << endl;
return 0;
}