| 10 | const int inf = 1e9 + 7; |
| 11 | |
| 12 | int find(vector<int> &parent, int x) |
| 13 | { |
| 14 | if (parent[x] == x) |
| 15 | { |
| 16 | return x; |
| 17 | } |
| 18 | parent[x] = find(parent, parent[x]); |
| 19 | return parent[x]; |
| 20 | } |
| 21 | |
| 22 | void union_num(vector<int> &parent, vector<int> &rank, int num1, int num2) |
| 23 | { |