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


/* macro */
#define rep(i,a,b) for(int i=a;i<b;i++)
#define revrep(i,a,b) for(int i = a; i > b; i--)
#define int long long
#define exist(s,e) ((s).find(e)!=(s).end())
#define all(v) (v).begin(), (v).end()
#define each(s,itr) for(auto (itr) = s.begin(); (itr) != s.end(); (itr)++)
#define sum(v) accumulate(all(v), (0LL))
#define sort(v) sort(all(v))



/* constant */
const int inf = 100100100100100100;
const int mod = 1000000007;
int dx[8]={1,0,-1,0,-1,1,-1,1};
int dy[8]={0,1,0,-1,-1,-1,1,1};


/* io_method */
int input(){int tmp;cin >> tmp;return tmp;}
string raw_input(){string tmp;cin >> tmp;return tmp;}
string readline(){string s;getline(cin, s);return s;}
template<class T> void printx(T n){cout << n;}
template<class T, class U> void printx(pair<T, U> p){cout << "(" << p.first << "," << p.second << ")";}
template<class T> void printx(vector<T> v){cout << "{";rep(i,0,v.size()){printx(v[i]);if(i != v.size()-1)printx(",");}cout << "}";}
template<class T> void print(T n){printx(n);cout << endl;}
template<class T> void print(set<T> s){cout << "{";each(s, e){if(e != s.begin()) printx(",");printx(*e);}cout << "}" << endl;}
template<class T, class U> void print(map<T, U> mp){cout << "{";each(mp, e){cout << "(" << e -> first << "," << e -> second << ")";}cout << "}" << endl;}


/* general_method */
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }


/* math_library */
int ceil(int a, int b){if(a % b == 0){return a/b;}else{return a/b + 1;}}


/* main */


signed main(){

    cin.tie(0);
    ios::sync_with_stdio(false);

    
    int n = input();

    vector<pair<int, int> > a;
    vector<pair<int, int> > b;

    rep(i,0,n/2){
        int x, y; cin >> x >> y;
        a.push_back(make_pair(x,y));
    }

    rep(i,n/2, n){
        int x, y; cin >> x >> y;
        b.push_back(make_pair(x,y));
    }

    vector<int> diffa;
    vector<int> diffb;

    rep(i,0,(1<< n/2)){
        int x = 0, y = 0;
        rep(j,0,n/2){
            if(i & (1 << j)){
                x += a[j].first;
            }else{
                y += a[j].second;
            }
        
        }
        diffa.push_back(x - y);
    }

    rep(i,0, (1<< (n - n/2))){
        int x = 0, y = 0;
        rep(j,0,(n-n/2)){
            if(i & (1<< j)){
                x += b[j].first;
            }else{
                y += b[j].second;
            }
        }
        diffb.push_back(x - y);
    }

    sort(diffa);
    sort(diffb);

   
    int mindiff = inf;

    rep(i,0,diffa.size()){
        auto tmp = lower_bound(all(diffb), -diffa[i]);
        if(tmp != diffa.begin() && abs(diffa[i] + *tmp) > abs(diffa[i] + *(tmp-1))) tmp--;
        
        chmin(mindiff, abs(diffa[i] + *tmp));
    }
    print(mindiff);

    






}