import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random
#sys.setrecursionlimit(10**9)
#sys.set_int_max_str_digits(0)
#input = sys.stdin.readline
#n = int(input())
#alist = list(map(int,input().split()))
#alist = []
#s = input()
n = int(input())
alist = list(map(int,input().split()))
mod = 998244353
ans = 0
for i in range(n):
    ans *= 10
    ans += alist[i]
    ans %= mod
print(ans)