(The idea of ??function-driven multi-layer wiring with bundled layers is introduced, the corresponding model description is given, and a neural network solving algorithm is proposed. The algorithm takes the least number of vias as the optimization policy, and the vias can connect any two layers. Binding conditions are that the line segments between, the line segments of different nets cannot intersect on the same layer, and the through hole of one net cannot intersect with other nets on the layer it passes through.)
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