## https://yukicoder.me/problems/no/1612

MOD = 998244353

def main():
    N = int(input())
    A = input().split()

    A.sort()

    answer_str = "".join(A)
    answer = 0
    for a in answer_str:
        answer *= 10
        answer %= MOD
        answer += int(a)
        answer %= MOD
    print(answer)



if __name__ == "__main__":
    main()