MOD = 998244353

n = int(input())
a = list(map(int, input().split()))
a.sort()

m = 0
for i in range(n - 1):
    x = a[i]
    y = a[i + 1]
    if x != y:
        xor = x ^ y
        k = xor.bit_length() - 1
        m += 1

ans = pow(2, m, MOD)
print(ans)