; Far CALL (protected mode)
"I have to walk two hours a day to come into town to get food," he says, preferring to find shelter outside of the city centre where he feels safer, sleeping in a one-man tent under a bridge.
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typedef struct Node {。关于这个话题，服务器推荐提供了深入分析
"satisfiable": true,，更多细节参见Line官方版本下载