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() {
  unsigned long long N, K, P;
  cin >> N >> K >> P;
  unsigned long long left = N - K;
  for (unsigned long long i = 0; i < P; i++) {
    unsigned long long x;
    cin >> x;
    if (K >= ((N + 1) / 2)) {
      if ((x % 2) == 0) {
        cout << 'X';
      } else {
        x = N - x + 1;
        x += 1;
        x /= 2;
        unsigned long long s = K - left;
        if (x <= s) {
          cout << 'X';
        } else {
          cout << '.';
        }
      }
    } else {
      x = N - x + 1;
      if (x <= K) {
        cout << 'X';
      } else {
        cout << '.';
      }
    }
  }
  return 0;
}
