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 cal(long long n, long long k, long long x) {
  if (k == 0) return 1;
  if (n & 1) {
    int hn = (n + 1) >> 1;
    if (x == n) return 0;
    if (k <= hn) {
      if (x & 1) return 1;
      --k;
      n = (n >> 1) - k;
      x >>= 1;
      return x <= n;
    }
    if (x & 1) {
      n -= k;
      x = (x + 1) >> 1;
      return x <= n;
    }
    return 0;
  } else {
    int hn = n >> 1;
    if (k <= hn) {
      if (x & 1) return 1;
      n = (n >> 1) - k;
      x >>= 1;
      return x <= n;
    }
    if (x & 1) {
      n -= k;
      x = (x + 1) >> 1;
      return x <= n;
    }
    return 0;
  }
}
int main() {
  long long n, k, p, x;
  cin >> n >> k >> p;
  for (int i = 1; i <= p; i++) {
    cin >> x;
    putchar(cal(n, k, x) ? '.' : 'X');
  }
  putchar('\n');
  return 0;
}
