#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <atcoder/modint>
using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
#define rep(i,n) for(int i=0; i<(int)(n); i++)


const i64 INF = 1001001001001001001;
using modint = atcoder::static_modint<998244353>;


int main(){
    int N; cin >> N;
    int Z = N + N + 10;
    vector<modint> dp(Z+1);
    vector<int> int_length(Z+10+1);
    rep(i,Z+10+1) int_length[i] = to_string(i).size();
    dp[0] = 1;
    for(int i=0; i<N; i++){
        vector<modint> tmp(Z+1);
        for(int s=0; s<=Z; s++){
            for(int nx=1; nx<=Z+10; nx++){
                int t = nx - int_length[nx];
                if(s + t < 0) continue;
                if(Z < s + t) continue;
                tmp[s + t] += dp[s];
            }
        }
        swap(dp, tmp);
    }

    cout << dp[N-1].val() << '\n';
    return 0;
}


struct ios_do_not_sync{
    ios_do_not_sync(){
        std::ios::sync_with_stdio(false);
        std::cin.tie(nullptr);
    }
} ios_do_not_sync_instance;