4.10 581. 最短无序连续子数组
"promoCode": "FREE_YEAR_VIP"
，这一点在safew官方下载中也有详细论述
The MX Master 4 is the latest evolution in a line of pioneering mice that dates back more than 20 years and has long been the mouse to beat for everything but hardcore PC gaming. Having given it a magnetic free-spinning scroll wheel, plenty of buttons and precise tracking, now Logitech is trying something different for its seven-generation: the ability to tap back at you.
高效序列化与反序列化：加速数据流转