This is a follow up of problem
Given the position of only one player's chess pieces(some of them) on the chessboard, figure out whether castling is valid or not.
Find the numeric mean of the prime numbers in a matrix.
count any radix?
Sum the entries of each column of a matrix which satisfy a logical condition.
Determine if input is a perfect number
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Fault in our Stars - 02
How lucky r u ?
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