import sys
input = sys.stdin.readline

from operator import itemgetter

mod=998244353

N=int(input())
A=input().split()

for i in range(N):
    A[i]=list(map(int,list(A[i])))

B=[]
for s in A:
    X=s[:]
    while len(X)<19:
        X+=s
    B.append((X,s))

B.sort(key=itemgetter(0))

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


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

print(ANS)