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;
signed main() {
  long long n, k, p;
  cin >> n >> k >> p;
  if (n % 2 == 1) {
    n -= 1;
    k -= 1;
  }
  string res = "";
  if (n % 2 == 0) {
    for (long long i = 0; i < p; i++) {
      long long x;
      cin >> x;
      if (k == -1) {
        res += ".";
        continue;
      }
      if (x == n + 1) {
        res += "X";
        continue;
      }
      if (x % 2 == 0) {
        if (k + x / 2 > n / 2)
          res += "X";
        else
          res += ".";
      } else {
        long long t = k - n / 2;
        if (t <= 0) {
          res += ".";
          continue;
        }
        if ((x + 1) / 2 + t >= n / 2)
          res += "X";
        else
          res += ".";
      }
    }
  }
  cout << res;
}
