#include<iostream> #include<stdio.h> #include<stdlib.h> #include<algorithm> #include<vector> #include<string.h> #include<math.h> #include<map> #include<iomanip> #include<queue> #include<set> using namespace std; using ll = long long; using ull = unsigned long long; const long double inf = 1e9 + 7; int main(){ cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; if(n == 0){ cout << 1 << endl; return 0; } string s = "010"; for(int i = 2; i <= n; i++){ s += '0'; } cout << s << endl; return 0; }