DAND

Can someone take some time and explain the optimised approach mentioned in the editorial in a nice way so that a noob like me can understand.

I went through this editorial but didn't get much out of it. I am confused about how he merges two components and initialise the m1 and m2 in components in the beginning. Please help me understand this editorial.

Problem

Can you please help me on this, I commented my queryYour text to link here...