Editorial for Mock CCC '24 Contest 1 S2 - Owen the Toucan
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
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:
For this problem, we must construct a permutation , by using integers from
to
such that the number of unique integers obtained from calculating the GCD of the element at the
position and the element at the
position of array
is exactly
.
There are many different strategies to construct such an array, and one of the possible solutions will be discussed in this editorial.
Subtask 1
IfIf
Subtask 2
We can split the creation of the array into two separate loops, one covering positions fromThe implementation details are left as an exercise for the reader.
Time Complexity:
Comments