/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 1e6+100, M = 1e5+10, K = 52, MX = 30, S = 300;
ll n;
array<ll, 2> a[N];
void solve(){
cin >> n;
ll gx = 0;
for(int i = 1; i <= n; ++i){
cin >> a[i][0] >> a[i][1];
if(i>1) gx=gcd(gx,abs(a[i][0]-a[i-1][0]));
}
ll ans = gx;
sort(a+1, a+1+n);
for(ll h = 2; h <= 200; ++h){
bool ok = 0;
int tot = 0;
for(ll s = 0; s <= 200; ++s){
bool kk = 1;
tot = 0;
for(int i = 2; i <= n; ++i){
tot += a[i][0] - a[i - 1][0];
// if(h == 2 && s == 1){
// cout << a[i][0] << ' ' << a[i - 1][0] << ' ';
// cout << tot << ' ' << tot/gx*s << '\n';
// }
if((tot / gx * s + 200*h) % h != (a[i][1] - a[1][1] + h * 200) % h) kk = 0;
}
if(kk){
ok = 1;
break;
}
}
if(ok) ans = max(ans, h*gx);
}
cout << ans;
// vector<pair<int, int>> p;
// for(int i = 1; i <= n; ++i){
// for(int j = i + 1; j <= n; ++j){
// p.pb({a[i][0] - a[j][0], a[i][1] - a[j][1]});
// p.pb({a[j][0] - a[i][0], a[j][1] - a[i][1]});
// }
// }
// for(auto x: p) cout << x.ff << ' ' << x.ss << '\n';
// vector<vector<int>> col(100, vi(100, -1));
// int c = 0;
// for(int i = 0; i < 100; ++i){
// for(int j = 0; j < 100; ++j){
// if(col[i][j] == -1){
// for(auto x: p){
// int nx = x.ff + i, ny = x.ss + j;
// if(nx >= 0 && ny >= 0 && nx < 100 && ny < 100){
// if(col[nx][ny] != -1) col[i][j] = col[nx][ny];
// }
// }
// if(col[i][j] == -1)
// col[i][j] = c++;
// }
// for(auto x: p){
// int nx = x.ff + i, ny = x.ss + j;
// if(nx >= 0 && ny >= 0 && nx < 100 && ny < 100){
// col[nx][ny] = col[i][j];
// }
// }
// }
// }
// for(int i = 0; i < 15; ++i){
// for(int j = 0; j < 15; ++j) cout << col[i][j] << ' ';
// en;
// }
}
int main(){
cin.tie(0); ios::sync_with_stdio(0);
int tt = 1, aa;
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
while(tt--){
solve();
en;
}
cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
return 0;
}
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