利用lingo求解网络流量分配矩阵，网络节点数可修改，默认为20。首先输入K条路径矩阵以及其他网络信息，以最小化链路利用率的平方为优化目标对流量进行分配。-Use lingo solving network traffic assignment matrix, the network nodes can be modified, the default is 20. First, enter the path matrix K and other network information to minimize the square in order to optimize link utilization target for traffic assignment.