Editorial for PIB '20 P5 - 4D Matrices
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Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
Author:
Let be the median of array if we set to all .
Observe that if we shift every element of by , the median of array is now .
To shift the elements of by , simply assign to all elements in .
Time Complexity:
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