1
class Solution {
2
 public:
3
  int countPoints(string rings) {
4
    int n = rings.length();
5
    // It is given that number of rod is 10 0 to 9 so we have to place ring any
6
    // of these
7
    vector<int> vp(10, 0); // store the no of rings
8
    for (int i = 0; i < n; i += 2) {
9
      char col = rings[i];
10
      vp[rings[i + 1] - '0'] |= (col == 'R' ? 1 : col == 'G' ? 2 : 4); // checking for rings
11
    }
12
    int count = 0;
13
    for (int i = 0; i < 10; i++) {
14
      if (vp[i] == 7) {
15
        count++;
16
      }
17
    }
18
    return count;
19
  }
20
};