InterviewBit Problems   Chain of Pairs : Unsolved

About the Chain of Pairs : Unsolved category (1)
Having problem in DP (3)
Chain Of Pairs: Python Solution (1)
This problem is similar to Longest Increasing Sequence. Please note "Sub-Sequence" is asked here (2)
Wront testcase for the given problem (10)
Easy C++ solution [C++] (2)
It is written in bold that sub sequence is required (1)