Figure 8: Difficulty by marginal LoC. Percentage breakdown of difficulty levels within each marginal LoC bin. As marginal LoC increases, the proportion of easy problems decreases monotonically: 93% → 88% → 85% → 81% → 79% → 50% → 13% → 0%. The difficulty cliff is sharp at 17+ marginal LoC, where hard and extreme problems become dominant.
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南方周末：南方科技大学的电子、材料、计算机、公共卫生等多学科专家都在投入研究“银发科技”，目前已有什么成果？走到了哪个阶段？