#include <stdio.h>
int main(void) {
	int n, a[100005], ans = 0;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++)
		scanf("%d", &a[i]);
	for (int i = 1; i <= n; i++)
		 for (int j = 1; j < i; j++)
			 if ((a[i] & a[j]) > (a[i] ^ a[j]))
				 ans++;
	printf("%d", ans);
	return 0;
}