#include <bits/stdc++.h> using namespace std; int main() { int n; cin>>n; string a = "0"; string b = ""; for(int i = 0;i < n;i++) { b = ""; for(int j = 0;j < a.size();j++) { if(a[j] == '0') { b += "1"; } else if(a[j] == '1') { b += "01"; } } a = ""; a = b; } for(int i = 0;i < b.size();i++) { cout<<b[i]; } return 0; }