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描述：给定链表 head，对于每个节点，查找其右侧第一个值严格大于它的节点。返回整数数组 answer，answer[i] 为第 i 个节点的下一个更大节点值；若无，则为 0。
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No Pokémon meme captures the internet's favorite emotion — aka "performative shock at predictable consequences" — better than Surprised Pikachu.
Prof Carissa Véliz of the Institute for Ethics in AI at Oxford University said trusting a firm to keep its word about how it uses sensitive data was another challenge.