#include <algorithm> #include <bitset> #include <chrono> #include <cmath> #include <functional> #include <iomanip> #include <iostream> #include <map> #include <numeric> #include <queue> #include <set> #include <stack> #include <string> #include <unordered_map> #include <unordered_set> #include <vector> using ll = long long; using vll = std::vector<ll>; using namespace std; #define REP(i, x, n) for(int i = x; i < (n); i++) #define rep(i, n) REP(i, 0, n) const ll MOD = 1000000007; int main() { int n; cin>>n; string s(n,'0'); s += "10"; puts(s.c_str()); return 0; }