import sys, time, random
from collections import deque, Counter, defaultdict
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 61 - 1
mod = 998244353

n = ii()
a = li()
a.sort()

ans = 0

for i in range(n):
    ans = 10 * ans + a[i]
    ans %= mod
print(ans)