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>
int i, p;
long long n, k, l, r, h, x;
int main() {
  scanf("%I64d%I64d%d", &n, &k, &p);
  if (k > 1 && k < n) {
    if (k * 2 > n + 1) {
      l = 0;
      r = n / 2;
      while (l < r) {
        h = (l + r) / 2 + 1;
        if (n - h < k)
          r = h - 1;
        else
          l = h;
      }
      l = 0;
      r += r;
    } else {
      r = n - (n & 1);
      l = r - 2 * (k - (n & 1));
    }
  }
  for (i = 0; i < p; i++) {
    scanf("%I64d", &x);
    x--;
    if (k < 2 || k == n)
      putchar((k == n || (k == 1 && n - 1 == x)) ? 'X' : '.');
    else if (x < l)
      putchar('.');
    else if (x < r)
      putchar(((x & 1) != (l & 1)) ? 'X' : '.');
    else
      putchar('X');
  }
  return 0;
}
