import java.util.Scanner;

public class Main {
	static int N = 0;
	static int[] E = null;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		N = Integer.parseInt(sc.next());
		E = new int[N];
		for ( int i = 0 ; i < N ; i++ ) {
			E[i] = Integer.parseInt(sc.next());
		}
		sc.close();

		if ( rec(0, 0, 0, 0) ) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
	
	static boolean rec(int pos, int pa, int pb, int pc) {
		if ( pos == N ) {
			if ( pa == pb && pb == pc ) {
				return true;
			} else {
				return false;
			}
		}
		
		if ( rec(pos + 1, pa + E[pos], pb, pc) ) return true;
		if ( rec(pos + 1, pa, pb + E[pos], pc) ) return true;
		if ( rec(pos + 1, pa, pb, pc + E[pos]) ) return true;
		
		return false;
	}
}