[Link] https://AtCoder.jp/contests/abc238/tasks/abc238_c
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import java.util.*;
import java.io.*;
public class Main {
static BufferedReader br;
static StringBuilder sb = new StringBuilder();
static int div = 998244353;
public static void main(String[] args) throws IOException {
br = new BufferedReader(new InputStreamReader(System.in));
long n = tol(br.readLine()), ndiv = n % div;
long sum = (ndiv * (ndiv + 1) / 2) % div;
long ans = sum - getDigit(n) + ndiv;
if(ans < 0) ans += div;
println(ans % div);
}
static long getDigit(long n) {
int len = String.valueOf(n).length();
long tenExp = 1l, remainder = 0l, tenExpDiv = 0l;
for(int i = 1; i < len; i++) {
tenExpDiv = tenExp % div;
remainder += (((tenExpDiv * tenExpDiv) % div) * 9) % div;
remainder %= div;
tenExp = tenExp * 10;
}
tenExpDiv = tenExp % div;
remainder += (tenExpDiv * ((n - tenExp + 1) % div)) % div;
remainder %= div;
return remainder;
}
static int toi(String s) { return Integer.parseInt(s); }
static long tol(String s) { return Long.parseLong(s); }
static String[] getLine() throws IOException { return br.readLine().split(" "); }
static int[] getArr() throws IOException { return Arrays.stream(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); }
static <T> void print(T s) { System.out.print(s); }
static <T> void println(T s) { System.out.println(s); }
}