#include <bits/stdc++.h>
using namespace std;
int main() {
  long long n, m, k, tn, tm;
  int i, p;
  cin >> n >> m >> p;
  tn = n;
  tm = m;
  if (n & 1) n--, m--;
  if (n - 2 * m + 2 > 1) {
    for ((i) = 0; (i) < (p); (i)++) {
      cin >> k;
      if ((k < n - 2 * m + 2 || (k & 1)) && (k != n + 1 || tm == 0))
        cout << '.';
      else if (k != 1 || tm == tn)
        cout << 'X';
      else
        cout << '.';
    }
  } else {
    for ((i) = 0; (i) < (p); (i)++) {
      cin >> k;
      if ((k <= 2 * (n - m) && k & 1) && (k != n + 1 || tm == 0))
        cout << '.';
      else if (k != 1 || tm == tn)
        cout << 'X';
      else
        cout << '.';
    }
  }
  cout << endl;
  return 0;
}
