#include <stdio.h>


char dp[3][32780];

int main(void){
	int i,j,n;
	int cnt=0;
	scanf("%d", &n);
	
	dp[0][0] = 1;
	for(i=1;i<=n;i++){
		int a;
		scanf("%d", &a);
		for(j=0;j<32780;j++){
			int front = (i+1)%2;
			int now = i%2;
			
			if(dp[front][j] == 1){
				int xor = a^j;
				dp[now][xor] = 1;
				dp[now][j] = 1;
			}
			
		}
	}
	
	for(i=0;i<32780;i++){
		if(dp[n%2][i] == 1){
			cnt++;
		}
	}
	
	printf("%d\n", cnt);
	return 0;
}