Spaced out further application

Problems and Contests
#1

for spaced out on silver can it be proven that the answer for any optimal subgrid of size n x n containing exactly n cows is just the maximum row/col of any alternation of size n? (so like if the gaps were greater than 2) http://www.usaco.org/index.php?page=viewproblem2&cpid=1088

#2

proof by AC

#3

well no it’s not the same problem…

#4

oh wait yeah it says containing exactly n cows
wait wdym by the maximum row/col of any alteration

#5

so in the problem the alternation size would be 2 since you just take the max of all i such that i % 2 == 0 and 1 but maybe for say i = 4 you would take all of i such that i % 4 == 0 i % == 1… i % 4 == 3

#6

So by i = 4, you mean that you only only allow 4 cows in a 4x4 square? Or is it still 2 cows in a 4x4 square?

#7

4