#include<bits/stdc++.h>
using namespace std;
#define ALL(x) begin(x),end(x)
#define rep(i,n) for(int i=0;i<(n);i++)
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define mod 1000000007
using ll=long long;
const int INF=1000000000;
const ll LINF=1001002003004005006ll;
int dx[]={1,0,-1,0},dy[]={0,1,0,-1};
// ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return true;}return false;}

struct IOSetup{
    IOSetup(){
        cin.tie(0);
        ios::sync_with_stdio(0);
        cout<<fixed<<setprecision(12);
    }
} iosetup;
 
template<typename T>
ostream &operator<<(ostream &os,const vector<T>&v){
    for(int i=0;i<(int)v.size();i++) os<<v[i]<<(i+1==(int)v.size()?"":" ");
    return os;
}
template<typename T>
istream &operator>>(istream &is,vector<T>&v){
    for(T &x:v)is>>x;
    return is;
}


signed main(){
    int n;cin>>n;
    vector<ll> a(n),b(n);
    rep(i,n) cin>>a[i]>>b[i];

    if(n==1){
        cout<<min(a[0],b[0])<<endl;
        return 0;
    }

    vector<ll> ax,bx,ay,by;
    rep(i,n){
        if(i%2==0){
            ax.push_back(a[i]);
            bx.push_back(b[i]);
        }else{
            ay.push_back(a[i]);
            by.push_back(b[i]);
        }
    }

    vector<ll> w;
    {
        int m=(int)ax.size();
        rep(i,1<<m){
            ll dif=0;
            rep(j,m){
                if((i>>j)&1)dif+=ax[j];
                else        dif-=bx[j];
            }
            w.push_back(dif);
        }
        sort(ALL(w));
    }
    ll res=LINF;
    {
        int m=(int)ay.size();
        rep(i,1<<m){
            ll dif=0;
            rep(j,m){
                if((i>>j)&1)dif+=ay[j];
                else        dif-=by[j];
            }
            int idx=lower_bound(ALL(w),-dif)-begin(w);
            for(int j=max(0,idx-2);j<min(idx+2,(int)w.size());j++){
                chmin(res,abs(dif+w[j]));
            }
        }
    }
    cout<<res<<"\n";
    return 0;
}