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 k, n;
  int p;
  cin >> n >> k >> p;
  long long a;
  if (k == 0ll) {
    while (p--) {
      cin >> a;
      printf("%c", '.');
    }
    printf("\n");
    return 0;
  }
  int t = 0;
  if (n & 1ll) k--, n--, t = 1;
  while (p--) {
    cin >> a;
    a = t + n - a + 1;
    if (t) a--;
    int f = a & 1;
    if (n / 2 >= k && a > k * 2) {
      f = 0;
    }
    if (n / 2 < k && a <= (k - n / 2) * 2) {
      f = 1;
    }
    printf("%c", (f || a == 0) ? 'X' : '.');
  }
  printf("\n");
  return 0;
}
