use std::io::Read;

fn main() {
    let mut buf = String::new();
    std::io::stdin().read_to_string(&mut buf).unwrap();
    
    let mut iter = buf.split_whitespace().map(|w| w.parse::<isize>().unwrap());
    
    let n: usize = iter.next().unwrap() as usize;
    let half: isize = iter.clone().sum();
    let mut weights: Vec<isize> = iter.collect();
    weights.sort();
    
    println!("{}", brute_force(0, half, &weights, n));
}

fn brute_force(pos: usize, remaining: isize, weights: &Vec<isize>, n: usize) -> bool {
    if remaining == 0 {
        return true
    } else if remaining < 0 || pos == n {
        return false
    }
    
    brute_force(pos + 1, remaining - weights[pos], weights, n) ||
    brute_force(pos + 1, remaining, weights, n)
}