// 本地测试示例：head = [2,1,5] → 输出 [5,5,0]
But when the platform announced it would soon require some users to verify their age, Alastair was among those concerned about its implications for their data - and that of their online communities.
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第七条 仲裁应当根据事实，符合法律规定，公平合理地解决纠纷。