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, n2, p;
  while (cin >> n >> n2 >> p) {
    long long n1 = n - n2;
    for (int ii = 0; ii < p; ii++) {
      long long k;
      cin >> k;
      if (n1 <= n2) {
        if (k <= 2 * n1)
          cout << (k % 2 == 1 ? "." : "X");
        else
          cout << "X";
      } else {
        if (k <= n1 - n2)
          cout << ".";
        else if ((n1 - n2) % 2 == 0)
          cout << (k % 2 == 1 ? "." : "X");
        else if (n2 == 1)
          cout << (k % 2 == 1 ? "X" : ".");
        else if (k == n1 - n2 + 2)
          cout << ".";
        else if (k == n1 - n2 + 3)
          cout << "X";
        else
          cout << (k % 2 == 1 ? "X" : ".");
      }
    }
    cout << endl;
  }
  return 0;
}
