APAC 2015 Round D

https://code.google.com/codejam/contest/6214486/dashboard

Problem A: Cube IV

Simple. DP.

Problem B: GBus count

Simple. For each point, for each gBus, check if it's covered.

Problem C: Sort a scrambled itinerary

Simple. Loop to find a city with no flight to it.

Problem D: Itz Chess

Simple. Take care of, it P in E3, then it can kill F2/F4 (not D4/F4).