M = int(input())
N = input()

def RSUM(l, r, c):
    return (l+r)*c//2

MOD = 998244353
ans = 0
C = M//10
cnt = 1
for i in range(len(N)):
    ans *= M
    ans %= MOD
    c = C
    if int(N[i]) <= M%10-1:
        c += 1
    if i == 0 and N[i] == "0":
        c -= 1
    ans *= c
    ans %= MOD
    l = int(N[i])
    diff = ((M%10-1)-int(N[i]))%10
    if i == 0 and N[i] == "0":
        l = 10
    r = M-diff-1
    ans += RSUM(l, r, c)%MOD*cnt%MOD
    ans %= MOD
    cnt *= c
    cnt %= MOD

print(ans)