Need more efficient solution

#1

one test case is failing. need more efficient solution

#2

hello @rick711c

that bitmask approach is the most efficient solution for this problem

#3

…

pls share ur code with me

#4
#5

can you please give an idea about the bitmask approch

#6

…

pls chck this out->

#7

one test case is failing

#8
#9

there is no link of the video …can you please share it again

#10

link -> https://www.youtube.com/watch?v=tMRZ6gqFYdg

#11

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