1. OA Round.
2. PS Round: Q1. Minimum length subtring with k distinct characters Q2. Multi source BFS problem.
3. PS Round: Q1. Coin and Energy problem of Hackerrank Q2. Shortest path in an undirected graph.
4. LLD: Air Traffic Controller

OA Round.
PS Round: Q1. Minimum length subtring with k distinct characters Q2. Multi source BFS problem.
PS Round: Q1. Coin and Energy problem of Hackerrank Q2. Shortest path in an undirected graph.
LLD: Air Traffic Controller