M=998244353
m=int(input())
n=list(map(int,input()))[::-1]
while len(n)-1>0 and n[-1]==0:
  n.pop()
pl=[1]*(len(n)+1)
for i in range(len(n)):
  d=n[i]
  c=(m-1-d)//10+1
  pl[i+1]=pl[i]*c%M
pr=[1]*(len(n)+1)
for i in range(len(n)):
  d=n[~i]
  c=(m-1-d)//10+1
  pr[i+1]=pr[i]*c%M
a=0
for i in range(len(n)):
  d=n[i]
  c=(m-1-d)//10+1
  a+=(((c-1)*c*pow(2,M-2,M))*10+d*c)*pl[i]*pr[len(n)-i-1]*pow(m,i,M)
  a%=M
print(a)