I=input
L=I()
L=1<<30
B=[[0,1]]
for a in list(map(int,I().split()))+[0]:
	s,c,C=0,L,[]
	for b in B:s,c,C=(s+b[1])%998244353,a|b[0],C+[[],[[c,s]]][c>a|b[0]]
	B=C+[[c,s],[a,[0,s][c>a]]]
print(B[-1][1])