I,J,R=input,int,range
N=J(I())
M=R(N)
E,V=[[] for n in M],[set() for n in M]
for n in M:
	X=I().split()
	E[n]=[J(X[0])-1,J(X[1])-1,0]
	for i in R(2):V[E[n][i]].add(n)
for n in M:
	v=n
	while len(V[v])==1:
		e=V[v].pop()
		i=v==E[e][0]
		w,E[e][2]=E[e][i],i
		V[w].remove(e)
		v=w
for v in M:
	while len(V[v]):
		e=V[v].pop()
		i=v==E[e][0]
		w,E[e][2]=E[e][i],i
		V[w].remove(e)
		v=w
for n in M:print("->"if E[n][2] else"<-")