For the first part, I used itertools.combinations
to find the highest pairs of batteries. And as
expected, that solution did not scale well for pt 2.
I figured out that reducing batteries until the top
most 12 (and 2) remained was the correct way to go.
the _maxj(line, C) function is the hive conclusion
from the solution mega thread. I really liked this
brilliant use of a while loop to exlude batteries.
- The first char just skip the while loop. A char
emptying the battery list also does this.
