#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++)

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

    
	const int M = 13;
    const int X = 800000 * M;
    const int Y = X * M * 2 + 1;
    const int H = X * M;
    bitset<Y> dp;
    int N;
    cin >> N;
    if (N >= 26){
    	cout << "0\n";
    	return 0;
    }
    rep(i, 0, N){
        int a;
        cin >> a;
        a += X;
        dp = (dp | (dp << a) | (dp >> a));
        dp[a + H] = true;
        dp[H - a] = true;
    }
    rep(i, 0, 1 << 30){
        if (dp[i + H] | dp[H - i]){
            cout << i << "\n";
            break;
        }
    }
}