import typing
import sys
from collections import defaultdict
input = lambda: sys.stdin.readline().strip()
inf = 10**18
mod = 998244353
# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
# sys.setrecursionlimit(10**6)

def solve():
  N = int(input())
  A = list(map(int, input().split()))
  A.sort()
  ans = 0
  for x in A:
    ans = ans*10 + x
    ans %= mod
  print(ans)
def main():
  t = 1
  for _ in range(t):
    solve()
main()