是囿于一时一事的得失，还是着眼打基础、利长远的实绩？
Every point gets examined, regardless of where it sits. Points on the opposite side of the map get the same treatment as points right next to the query region. We're doing a lot of unnecessary work.
。关于这个话题，Line官方版本下载提供了深入分析
Nowadays, there’s really no difference between a Wi-Fi booster and Wi-Fi extender - they’re just different names for the same thing. Previously, however, Wi-Fi boosters were devices that received signals from wireless routers, broadcasting them to another network. This essentially extends the range of the signal. Wi-Fi extenders expand the coverage within your home’s Wi-Fi network, but often you will see extenders described as boosters.
Что думаешь? Оцени!
Determine if it's satisfiable or not WITHOUT USING ANY EXTERNAL TOOLS.