#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
template <typename T> bool chmax(T &u, const T z) { if (u < z) {u = z; return true;} else return false; }
template <typename T> bool chmin(T &u, const T z) { if (u > z) {u = z; return true;} else return false; }
#define ll long long
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
//#define endl "\n"
typedef pair<ll, ll> P;
//const ll INF = LLONG_MAX;
using mint = modint1000000007;
//using mint = modint998244353;
//const int MOD = 1000000007;
ll gcd(ll x, ll y) { return y ? gcd(y, x % y) : x; }

int main(){
  int n;
  cin>>n;
  if(n==0)cout<<1<<endl;
  else if(n==1)cout<<010<<endl;
  else if(n==2)cout<<010010<<endl;
  else {
    cout<<01;
    rep(i,n)cout<<0;
    cout<<10<<endl;
  }
  return 0;
}