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;
long long n, k, x, y, m;
int i, p;
int main() {
  cin >> n >> k >> p;
  if (2 * k <= n && n % 2 == 0) {
    for (i = 1; i <= p; i++) {
      cin >> m;
      if ((n - m + 1) % 2 == 1 && (n - m + 1) / 2 < k)
        cout << 'X';
      else
        cout << '.';
    }
  }
  if (2 * k <= n && n % 2 == 1) {
    for (i = 1; i <= p; i++) {
      cin >> m;
      if (n == m && k > 0)
        cout << 'X';
      else if ((n - m + 1) % 2 == 0 && (n - m + 1) / 2 < k)
        cout << 'X';
      else
        cout << '.';
    }
  }
  if (2 * k > n) {
    x = n - k;
    for (i = 1; i <= p; i++) {
      cin >> m;
      if (m % 2 == 1 && (m + 1) / 2 <= x)
        cout << '.';
      else
        cout << 'X';
    }
  }
  cout << endl;
  return 0;
}
