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)