import sys
#sys.setrecursionlimit(10 ** 6)
#sys.set_int_max_str_digits(0)
INF = float('inf')
MOD = 10**9 + 7
MOD2 = 998244353
from collections import defaultdict
def ceil(A,B):
    return -(-A//B)
def ceil(A,B):
    return -(-A//B)
def solve():
    def II(): return int(sys.stdin.readline())
    def LI(): return list(map(int, sys.stdin.readline().split()))
    def LC(): return list(sys.stdin.readline().rstrip())
    def IC(): return [int(c) for c in sys.stdin.readline().rstrip()]
    def MI(): return map(int, sys.stdin.readline().split())
    N = II()
    A = LI()
    A.sort()
    X = 0
    for a in A:
        X = 10*X+a
        X%=MOD2
    print(X)
    return
solve()