#include <cstdio>
#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>
#include <numeric>
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
//constexpr long long MAX = 5100000;
constexpr long long INF = 1LL << 60;
constexpr int inf = 1000000007;
constexpr long long mod = 1000000007LL;
//constexpr long long mod = 998244353LL;
const long double PI = acos((long double)(-1));

using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;

vector<ll> BruteForce(vector<ll>& a, vector<ll>& b) {
    int n = a.size();
    vector<ll> res; res.emplace_back(0);
    for (int i = 0; i < n; i++) {
        vector<ll> cur1;
        vector<ll> cur2;
        for (auto p : res) {
            cur1.emplace_back(p - b[i]);
            cur2.emplace_back(p + a[i]);
        }
        res.clear(); res.resize(cur1.size() + cur2.size());
        merge(cur1.begin(), cur1.end(), cur2.begin(), cur2.end(), res.begin());
    }
    return res;
}

int main()
{
    /*
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    */

    int n; scanf("%d", &n);
    vector<ll> a(n), b(n); for (int i = 0; i < n; i++) scanf("%lld %lld", &a[i], &b[i]);
    vector<ll> v1, v2;
    {
        int h = n / 2;
        auto ta1 = a, tb1 = b;
        vector<ll> ta2, tb2;
        while (ta1.size() > h) {
            ta2.emplace_back(ta1.back());
            tb2.emplace_back(tb1.back());
            ta1.pop_back();
            tb2.pop_back();
        }
        v1 = BruteForce(ta1, tb1);
        v2 = BruteForce(ta2, tb2);
        reverse(v1.begin(), v1.end());
    }
    int cur = 0;
    ll res = INF;
    for (int i = 0; i < v1.size(); i++) {
        while (cur < v2.size() and v1[i] + v2[cur] < 0) cur++;
        if (cur) chmin(res, -(v1[i] + v2[cur - 1]));
        if (cur < v2.size()) chmin(res, v1[i] + v2[cur]);
    }
    cout << res << endl;
    return 0;
}