import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		new Main().run();
	}

	ArrayList<Double>[][] dp;

	// [left,right]
	ArrayList<Double> rec(int left, int right, int[] A, int[] ord) {
		if (dp[left][right].size() != 0) {
			return dp[left][right];
		}
		if (right - left == 0) {
			dp[left][right].add((double) A[ord[left]]);
			return dp[left][right];
		}
		ArrayList<Double> ret = new ArrayList<>();
		for (int i = left; i < right; ++i) {
			ArrayList<Double> lv = rec(left, i, A, ord);
			ArrayList<Double> rv = rec(i + 1, right, A, ord);
			for (double v1 : lv) {
				for (double v2 : rv) {
					if (v1 >= v2) {
						ret.add(v1 + v2);
						ret.add(v1 - v2);
						ret.add(v1 * v2);
						if (v1 + v2 < 1e-6 || v1 - v2 < 1e-6) {
							System.out.println("YES");
							System.exit(0);
						}
					}
					if (v2 != 0) {
						ret.add(v1 / v2);
					}
				}
			}
		}
		dp[left][right] = ret;
		return ret;
	}

	void run() {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] A = new int[N];
		for (int i = 0; i < N; ++i) {
			A[i] = sc.nextInt();
		}
		int[] ord = new int[N];
		for (int i = 0; i < ord.length; ++i) {
			ord[i] = i;
		}
		// permutationの状態数は5040通り。
		do {
			dp = new ArrayList[N][N];
			for (int i = 0; i < N; ++i) {
				for (int j = 0; j < N; ++j) {
					dp[i][j] = new ArrayList<>();
				}
			}
			rec(0, N - 1, A, ord);
		} while (nextPermutation(ord));
		System.out.println("NO");
	}

	boolean nextPermutation(int[] ord) {
		int n = ord.length;
		int i = n - 1;
		while (i - 1 >= 0 && ord[i - 1] > ord[i]) {
			--i;
		}

		if (i == 0)
			return false;
		int j = i;

		while (j + 1 < n && ord[i - 1] < ord[j + 1]) {
			++j;
		}
		int tmp = ord[i - 1];
		ord[i - 1] = ord[j];
		ord[j] = tmp;
		int s = i;
		int t = n - 1;
		while (t - s > 0) {
			tmp = ord[t];
			ord[t] = ord[s];
			ord[s] = tmp;
			++s;
			--t;
		}

		return true;

	}

	void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}