Problem Statement: USACO

Problem Anaylsis: Contest Results

I understand most of the solution, but I don’t understand why there are 4 extra elements at the end of both the dr and dc arrays that don’t travel a distance of 3.

Problem Statement: USACO

Problem Anaylsis: Contest Results

I understand most of the solution, but I don’t understand why there are 4 extra elements at the end of both the dr and dc arrays that don’t travel a distance of 3.

bump

Moving EWE is equivalent to moving E.

Thanks, I finally understand that!