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 n, k, p, safe, death, splitter, sbuff, dbuff, range;
  long long zero = 0;
  cin >> n >> k >> p;
  safe = n - k;
  death = k;
  splitter = (1 + safe) / 2;
  if (death > splitter) {
    sbuff = max(zero, safe - death);
    dbuff = max(zero, death - safe);
  } else {
    sbuff = safe;
    dbuff = death;
  }
  range = n - sbuff - dbuff;
  for (int i = 0; i < p; ++i) {
    long long idx;
    cin >> idx;
    if (idx <= sbuff) {
      cout << ".";
    } else if (idx > sbuff and idx <= sbuff + range) {
      long long normalize = idx - sbuff - 1;
      if (normalize % 2 == 0)
        cout << ".";
      else
        cout << "X";
    } else
      cout << "X";
  }
  cout << endl;
  return 0;
}
