#include <iostream>

 #include <algorithm>

 #define ll long long

 using namespace std;

 const int MAXN=1e4+;

 ll x[MAXN], y[MAXN], z[MAXN];

 int main(void){

     int n;

     cin >> n;

     for(int i=; i<n; i++){

         cin >> x[i] >> y[i] >> z[i];

     }

     sort(x, x+n);

     sort(y, y+n);

     sort(z, z+n);

     ll ans=;

     int pos=n>>;

     for(int i=; i<n; i++){

         ans+=abs(x[pos]-x[i])+abs(y[pos]-y[i])+abs(z[pos]-z[i]);

     }

     cout << ans << endl;

     return ;

 }