#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<ll>
#define vvi vector<vi>
#define pp pair<ll, ll>
#define vp vector<pp>
#define inf 1000000000
#define mod 1000000007
int main(){
cin.tie(0);
ios_base::sync_with_stdio(false);
ll n;
cin >> n;
vp point(n);
for(int i = 0; i < n; i++){
cin >> point[i].first >> point[i].second;
}
sort(point.begin(), point.end());
ll row = 0;
for(int i = 1; i < n; i++){
if(point[i].first == point[i - 1].first){
ll val = point[i].second - point[i - 1].second;
if(row == 0) row = val;
row = gcd(row, val);
}
}
for(int i = 0; i < n; i++) swap(point[i].first, point[i].second);
sort(point.begin(), point.end());
ll col = 0;
for(int i = 1; i < n; i++){
if(point[i].first == point[i - 1].first){
ll val = point[i].second - point[i - 1].second;
if(col == 0) col = val;
col = gcd(col, val);
}
}
cout << row * col << '\n';
}
