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, p, d, x;
  cin >> n >> k >> d;
  p = n - k;
  for (int i = 0; i < d; i++) {
    cin >> x;
    x--;
    if (p <= k) {
      if (x % 2 == 0 && x / 2 < p) {
        cout << ".";
      } else {
        cout << "X";
      }
    } else {
      if (n % 2 == 0) {
        if ((x % 2 == 1) && (n - 1 - x) / 2 < k) {
          cout << "X";
        } else {
          cout << ".";
        }
      } else {
        if (x != n - 1) {
          if ((x % 2 == 1) && (n - 2 - x) / 2 < (k - 1)) {
            cout << "X";
          } else {
            cout << ".";
          }
        } else {
          if (k > 0)
            cout << "X";
          else
            cout << ".";
        }
      }
    }
  }
  return 0;
}
