#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n;
  cin >> n;
  string a, b;
  vector<long long int> v1, v2;
  for (long long int i = 0; i < n; i++) {
    long long int x, y;
    cin >> x >> y;
    v1.push_back(x);
    v2.push_back(y);
    a += "0";
    b += "0";
  }
  long long int i = 0, j = 0;
  while ((i + j) != n) {
    if (v1[i] <= v2[j])
      a[i] = '1', i++;
    else
      b[j] = '1', j++;
  }
  for (long long int i = 0; i < n / 2; i++) {
    a[i] = '1';
    b[i] = '1';
  }
  cout << a << endl << b;
  return 0;
}
