/*
Author : Chandan Agrawal
College : Poornima College of Engg. jaipur, Raj
Mail : chandanagrawal23@gmail.com


" when you are not practicing someone else is ,
 and the day u meet them u will lose "

*/
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;

#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define MAX 200050

#define ll long long
#define ld long double
#define lli long long int

#define pb push_back
#define INF 1000000000000
#define mod 1000000007

// trignometric function always give value in Radians only
#define PI acos(-1) //3.1415926535897932384626433832795028
#define dsin(degree) sin(degree*(PI/180.0))
#define dcos(degree) cos(degree*(PI/180.0))
#define dtan(degree) tan(degree*(PI/180.0))

#define rsin(radian) sin(radian)
#define rcos(radian) cos(radian)
#define rtan(radian) tan(radian)

#define mem0(a) memset(a,0,sizeof(a))
#define mem1(a) memset(a,-1,sizeof(a))
#define memf(a) memset(a,false,sizeof(a))

#define loop(i,n)  for (lli i = 0; i < n; i++)
#define FOR(i,a,b) for (lli i = a; i < b; i++)

#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define makeuniq(v) v.resize(unique(all(v)) - v.begin()); //only uniq element in vector after this
#define sz(x) int(x.size())
#define F first
#define S second

#define mii map<lli,lli>

#define pii pair<lli,lli>

#define vi vector<lli>
#define vvi vector<vi>
#define vpi vector<pii>
#define vbool vector<bool>

#define seti set<lli>

#define gcd(a,b) __gcd((a),(b))
#define lcm(a,b) (a/gcd(a,b))*b
#define abs(x) ((x < 0)?-(x):x)

#define endl '\n'

template <typename Head>
void print(Head&& head)
{
    cout<<head<<endl;
}
template <typename Head, typename... Tail>
void print(Head&& head, Tail... tail)
{
    cout<<head<<" ";
    print(tail...);
}

#define scanarr(a,n) for(lli i=0;i<n;i++)    cin>>a[i];
#define scanvec(a,n) for(lli i=0;i<n;i++){ lli x ; cin>>x; a.pb(x);}

#define printarr(a,n) for(lli i=0;i<n;i++)   cout<<a[i]<<" "; cout<<endl;
#define printvec(vec) for(auto xt : vec) cout<<xt<<" ";    cout<<"\n";

#define FD(N) fixed<<setprecision(N)

#define deb(x) cout<<#x<<" "<<x<<endl;

/*
1D vector -  vi dp(n,value);
2D vector -  vvi dp(n,vi(n,value));
*/

// chandan1,2
void chandan1(){int y=1;return;}
void chandan2(){
        loop(i,10){
        lli x=1;
    }
    return(chandan1());
}


int main(){
fastio
lli t=1;
//cin>>t;
chandan2();
while(t--) {
      lli n;
      cin>>n;
      pii a[n];
      
      loop(i,n)
      {
          cin>>a[i].F>>a[i].S;
      }
      
      sort(a,a+n);
      
      pii maxi_x_plus_y;
      lli maxi = -INF;
      pii mini_x_plus_y;
      lli mini = INF;
      loop(i,n)
      {
          if(maxi < (a[i].F+a[i].S))
          {
              maxi = (a[i].F+a[i].S);
              maxi_x_plus_y = a[i];
          }
          
          if(mini >  (a[i].F+a[i].S))
          {
              mini =  (a[i].F+a[i].S);
              mini_x_plus_y = a[i];
          }
      }
      

      
      pii maxi_x_minus_y;
      maxi = -INF;
      pii mini_x_minus_y;
      mini = INF;
      loop(i,n)
      {
          if(maxi < (a[i].F-a[i].S))
          {
              maxi = (a[i].F-a[i].S);
               maxi_x_minus_y= a[i];
          }
          
          if(mini >  (a[i].F-a[i].S))
          {
              mini =  (a[i].F-a[i].S);
              mini_x_minus_y = a[i];
          }
      }
      lli dist1 = abs(maxi_x_plus_y.F-mini_x_plus_y.F) + abs(maxi_x_plus_y.S-mini_x_plus_y.S);
      lli dist2 = abs(maxi_x_minus_y.F-mini_x_minus_y.F) + abs(maxi_x_minus_y.S-mini_x_minus_y.S);
      print(max(dist1 , dist2));
  }
return 0;
}



Measured memory_bytes: 6788