import sys
input = sys.stdin.readline

mod = 998244353
n = int(input())
dp = [0] * n
dp[0] = 1
for _ in range(n):
    ndp = [0] * n
    for j in range(1, n+10):
        x = j - len(str(j))
        for k in range(n-x):
            ndp[x+k] = (ndp[x+k] + dp[k]) % mod
    dp = ndp
print(dp[n-1])