R=range
def J():
	return map(int,input().split())
N,Q=J()
p=[i for i in R(N*2)]
def r(i):
	m=p[i]
	while i!=m:
		p[i]=i=p[m]
		m=p[i]
	return i
for i in R(Q):
	A,B,C=J()
	A-=1
	B-=1
	for j in R(2):p[r(A+N*j)]=r(B+N*((C+j)%2))
f=[1]*(N*2)
a=1
for i in R(N):
	j,k=r(i),r(i+N)
	if f[j]:a=a*[2,0][j==k]%998244353
	f[j]=f[k]=0
print(a)