import sys
sys.setrecursionlimit(5*10**5)
input = sys.stdin.readline
from collections import defaultdict, deque, Counter
from heapq import heappop, heappush
from bisect import bisect_left, bisect_right
from math import gcd

n = int(input())
a = list(map(int,input().split()))

a.sort()
ans = 0
for i in range(n):
    ans = ans*10+a[i]
    ans %= 998244353

print(ans)