Harry and Hermione - 2 [1 and 2 are completely different problems. Consider reading both.] The monsters are back again. Har... |
On My Way One fine morning you discovered yourself standing in a maze. The maze can be considered a connected ... |
Shiku Gets Lucky One day while playing, Shiku found a sequence of lowercase English letters. Shiku thought it might b...
Moderate
94/105/187 |
Tour De Chittagong The city of Chittagong can be considered a weighted directed acyclic graph (DAG) of n nodes and m ed...
Moderate
3/5/5 |
Yet Another XOR Problem You are given an integer array a of size n. You need to select an integer K(0≤K<231) and perform the...
Very Hard
18/18/29 |