#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;
}