输出：[4,2,4,-1,4]（最后一个 3 绕一圈找到 4）
Another smoke alarm company, Kidde, has developed a subscription-based service that charges users in the US $5 (£3.71) per month for access to a fire monitoring service linked to the Ring doorbell app. "Trained agents can request emergency help and alert a customer's emergency contacts in the event of an alarm," explains Kidde on its website.
，这一点在体育直播中也有详细论述
It was just like a navy blue t-shirt with a white, fairly small logo on the chest.，详情可参考谷歌浏览器【最新下载地址】
（一）拖轮船长、船员、引航员或者承拖方的其他受雇人、代理人在驾驶拖轮或者管理拖轮中的过错；
Медведев вышел в финал турнира в Дубае17:59