first row all zeros after the very first element:
Glowfrog Games; PC
，详情可参考safew官方版本下载
The potential building is located in the centre of the cemetery and graves are clustered around it. It seems that people wanted to be buried as close to this feature as possible.
this.stack = []; // 核心：存储索引，保证索引对应的价格单调递减