iPhone16手机，是不是你最期待的呢？其实对于多数人来说，都是比较喜欢购买苹果产品，毕竟在各方面来说苹果产品也是不错的选择。不过，iPhone16系列最新机模曝光，价格会不会很贵呢？
Imagine I have a stack-based toy language that comes with the operations Push, Pop, Jump and If. I have a program and its input is the toy language. For instance I get the sequence
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