import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################
mod = 998244353
n = ni()
from collections import defaultdict
dp = defaultdict(int)
dp[-1] = 1
for i in range(n):
    ndp = defaultdict(int)
    ndp,dp = dp,ndp
    for j in ndp:
        for k in range(1,n+10):
            nj = j + len(str(k))+1-k
            #print(j, nj)
            if abs(nj) > n+10:
                continue
            dp[nj] += ndp[j]
            dp[nj] %= mod
print(dp[0])