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;
const int INF = 0x3f3f3f3f;
const double eps = 1E-8;
long long n, k, x;
int p;
int main() {
  cin >> n >> k >> p;
  if (n & 1) {
    for (int i = 1; i <= p; i++) {
      long long id = 0;
      cin >> x;
      if (x == n) {
        if (k == 0)
          putchar('.');
        else
          putchar('X');
      } else {
        if (x & 1) {
          id += (x + 1) / 2;
        } else {
          id += n / 2;
          id += x / 2;
        }
        if (id > (n - k))
          putchar('X');
        else
          putchar('.');
      }
    }
    puts("");
  } else {
    for (int i = 1; i <= p; i++) {
      cin >> x;
      long long id = 0;
      if ((x & 1) == 0) {
        id += n / 2;
        id += x / 2;
        if (id > (n - k))
          putchar('X');
        else
          putchar('.');
      } else {
        id += (x + 1) / 2;
        if (id > (n - k))
          putchar('X');
        else
          putchar('.');
      }
    }
    puts("");
  }
  return 0;
}
