#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
#endif
typedef long long  ll;
typedef pair<int,int> pii; typedef pair<ll,ll> pll;
const int INF = 1e9; const long long LINF = 1e18;
const int MOD = 998244353; const int MOD1 = 1e9+7;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(x) x.begin(), x.end()
template<typename T> bool chmin(T& a, T b){if(a > b){a = b; return true;} return false;}
template<typename T> bool chmax(T& a, T b){if(a < b){a = b; return true;} return false;}
void yorn(bool ans){cout << (ans?"Yes":"No") << endl; return;}

int main(){
    int n; cin >> n;
    
    int loop = n/36;
    int loop2 = n%36;
    vector<pii> a;
    for(int i=1;i<=9;i++){
        for(int j=i+1;j<=9;j++){
            a.push_back({i,j});
        }
    }
    cout << a.at((loop2+35)%36).first;
    rep(i,loop+1) cout << a.at((loop2+35)%36).second;

}