import sys
input = sys.stdin.readline

mod=998244353

N=int(input())
A=list(map(int,input().split()))

A=list(map(str,A))

B=[]
for s in A:
    X=list(s)
    while len(X)<20:
        X+=list(s)
    B.append((X,list(s)))

B.sort()

X=[]
for _,s in B:
    X+=s


ANS=0
T=1
for i in range(len(X)):
    u=len(X)-1-i
    ANS=(ANS+int(X[u])*T)%mod
    T=T*10%mod

print(ANS)