use proconio::input;
use std::collections::HashSet;

fn main() {
	input! {
		n: usize,
		rating: [i64; n],
	}
	
	let mut dp = HashSet::new();
	let mut add = vec![];
	for &r in &rating {
		add.push((1, r));
		add.push((-1, -r));
		for &(x, y) in &dp {
			add.push((x + 1, y + r));
			add.push((x - 1, y - r));
		}
		
		for x in add.drain(..) {
			dp.insert(x);
		}
	}
	
	let mut ans = 1_000_000_000_000_000_000;
	for (x, y) in dp {
		if x == 0 {
			ans = ans.min(y.abs());
		}
	}
	
	println!("{ans}");
}