Problems by Apurba.884537

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 ...
DP, Graph Moderate 10/13/32
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
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