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, odd, even, First;
  int p;
  cin >> n >> k >> p;
  odd = max(2LL * k - n, 0LL);
  if ((n - odd) % 2LL) odd++;
  even = k - odd;
  First = n - odd - even * 2LL + 2LL;
  for (int i = 1; i <= p; i++) {
    long long x;
    cin >> x;
    if (k == 0LL) {
      cout << ".";
      continue;
    }
    if (k == 1LL) {
      if (x == n)
        cout << "X";
      else
        cout << ".";
      continue;
    }
    if (x > n - odd)
      cout << "X";
    else if (x == First || x > First && (x - First) % 2LL == 0LL)
      cout << "X";
    else
      cout << ".";
  }
  cout << endl;
  return 0;
}
