I need to select maximum vertices in a graph such that the distance between any two selected vertices is less than the given limit? distance between adjacent nodes is 1. Input n,d meaning number of nodes and the limit d, n-1 lines follows denoting edges. Example 6 5 2 1 2 3 4 2 1 6 5 6

Output 5 As all 5 vertices can be selected within the range d