#include // {{{ // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("O2,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt") using namespace std; template constexpr T MIN = std::numeric_limits::min(); template constexpr T MAX = std::numeric_limits::max(); template [[nodiscard]] static T sc(auto&& x) { return static_cast(x); } template [[nodiscard]] static T sz(auto&& x) { return static_cast(x.size()); } using ll = long long; using ld = long double; template using vec = std::vector; template using arr = std::array; #define ff first #define ss second #define eb emplace_back #define pb push_back #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() // }}} vec f(int n) { vec gray{"0", "1"}; while (--n) { vec copy(gray); reverse(all(copy)); gray.insert(gray.end(), all(copy)); for (int i = 0; i < sz(gray); ++i) gray[i].push_back('0' + (i >= sz(gray) >> 1)); } return gray; } void solve() { int n; cin >> n; vec gray = f(n); for (auto s : gray) { cout << s << endl; } } int main() { // {{{ cin.tie(nullptr)->sync_with_stdio(false); solve(); return 0; } // }}}