N=int(input())

mod=998244353
FACT=[1]
for i in range(1,2*10**5+1):
    FACT.append(FACT[-1]*i%mod)

FACT_INV=[pow(FACT[-1],mod-2,mod)]
for i in range(2*10**5,0,-1):
    FACT_INV.append(FACT_INV[-1]*i%mod)

FACT_INV.reverse()

def Combi(a,b):
    if 0<=b<=a:
        return FACT[a]*FACT_INV[b]*FACT_INV[a-b]%mod
    else:
        return 0

ANS=0
for i in range(N):
    now=i-(N-1-i)
    if (now+1)%4==N%4:
        now=now+1
    else:
        now=now-1

    ANS=(ANS+2*Combi(N-1,i)*pow(2,abs(now),mod))%mod
print(ANS)