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 a, b;
int n;
int main() {
  ios_base::sync_with_stdio(false);
  cin >> a >> b >> n;
  for (int i = 0; i < n; i++) {
    long long t;
    cin >> t;
    if (a % 2 == 0) {
      if (t % 2 == 0 && a / 2 - t / 2 + 1 <= b)
        cout << 'X';
      else if (t % 2 == 0)
        cout << ".";
      else if (b > a / 2 && a / 2 - t / 2 <= b - a / 2)
        cout << 'X';
      else
        cout << '.';
    } else {
      if (b >= 1 && t == a) {
        cout << 'X';
        continue;
      }
      long long at = a - 1, bt = b - 1;
      if (t % 2 == 0 && at / 2 - t / 2 + 1 <= bt)
        cout << 'X';
      else if (t % 2 == 0)
        cout << ".";
      else if (bt > at / 2 && at / 2 - t / 2 <= bt - at / 2)
        cout << 'X';
      else
        cout << '.';
    }
  }
  cout << endl;
  return 0;
}
