candidate[n] = closest colour to goal
（二）采取预收款方式提供建筑服务；，推荐阅读Line官方版本下载获取更多信息
，详情可参考im钱包官方下载
Bits [17:14]: Four control flags -- set the descriptor's Accessed bit, mark validation passed, request a limit check, or signal a stack operation.，更多细节参见服务器推荐
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