7 7 7
1
2
3
4
5
6
7
 4 2 8
1
3
4
2
3
4
1
2
 9 4 9
1
2
3
4
5
6
7
8
9
 7 5 7
1
2
3
4
5
6
7
 15 10 15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 4 0 4
1
2
3
4
 12 2 12
1
2
3
4
5
6
7
8
9
10
11
12
 10 2 10
1
2
3
4
5
6
7
8
9
10
 7 4 7
1
2
3
4
5
6
7
 7 3 7
1
2
3
4
5
6
7

XXXXXXX
 ..XX.X.X
 ...X.X.XX
 .X.XXXX
 .X.X.X.X.XXXXXX
 ....
 .........X.X
 .......X.X
 .X.X.XX
 ...X.XX

#include <bits/stdc++.h>
using namespace std;
int main() {
  long long n, k, m;
  int p;
  cin >> n >> k >> p;
  bool flag = false;
  m = n;
  if (n % 2 == 1 and k > 0) m--, flag = true, k--;
  long long x;
  long long b;
  string s = "";
  for (int i = 0; i < p; i++) {
    cin >> x;
    b = 0;
    if (x == n and flag == true)
      s = s + 'X';
    else {
      if (x % 2 == 1)
        b = m / 2 + (m / 2 - (x + 1) / 2);
      else
        b = m / 2 - x / 2;
      b = max(b, (long long)0);
      if (b >= k)
        s = s + '.';
      else
        s = s + 'X';
    }
  }
  cout << s;
  return 0;
}
