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An example of a triangulated irregular network. The known data sites (black points) are triangulated to form a convex hull.
even positions: 8,6,4,2,0 sum to 20.
习近平总书记深刻指出，高质量发展应该不断提高劳动效率、资本效率、土地效率、资源效率、环境效率，不断提升科技进步贡献率，不断提高全要素生产率。