import sys
input = sys.stdin.readline

mod=998244353

N=int(input())

if N<3:
    print(0)
else:

    D=[0]*N

    for i in range(N-1):
        x,y=map(int,input().split())
        x-=1
        y-=1
        D[x]+=1
        D[y]+=1

    ANS=0

    for i in range(N):
        ANS=(ANS+pow(2,D[i],mod))%mod

    if D.count(1)==N-1:
        ANS-=2

    print(ANS%mod)