from itertools import permutations

N = int(input())
A = list(map(int, input().split()))
P = list(permutations(range(N), N))
x = float("inf")

for p in P:
    x_i = 0
    for i in p:
        x_i = 10*x_i + A[i]
    x = min(x_i, x)
print(x%998244353)