#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic pop
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  VI s(501);
  VI rest(500);
  iota(all(rest), 1);
  for(int x = 1; x <= 9; x++) {
    VI r;
    vector<char> bad(1000);
    VI pos;
    for(int d: rest) {
      if (bad[d]) {
        r.emplace_back(d);
        continue;
      }
      s[d] = x;
      for(int p: pos) bad[p + d] = true;
      bad[d + 1] = true;
      pos.emplace_back(d);
    }
    rest = r;
  }
  // cout << rest.size() << endl;
  int n;
  cin >> n;
  rep(i, n) cout << s[i+1];
  cout << '\n';
}