import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		boolean[][] arrays = new boolean[n][];
		for (int i = 0; i < n; i++) {
		    arrays[i] = getBinary(sc.nextInt());
		}
		long total = 1;
		for (int i = 0; i < 16; i++) {
		    boolean hasTrue = false;
		    for (int j = 0; j < n; j++) {
		        if (arrays[j][i]) {
		            hasTrue = true;
		            break;
		        }
		    }
		    if (hasTrue) {
		        total *= 2;
		    }
		}
		System.out.println(total);
	}
	
	static boolean[] getBinary(int x) {
	    boolean[] ans = new boolean[16];
	    for (int i = 0; i < ans.length; i++) {
	        ans[i] = (x % 2 == 1);
	        x /= 2;
	    }
	    return ans;
	}
}