Kalman Filter with Hungarian Algorithm

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I need to implement a kalman filter in python, however the code for the Hungarian Algorithm is different from the C++ example that I found here, can anyone tell me what result will be return when this code is call?

AssignmentProblemSolver APS;
APS.Solve(Cost,assignment,AssignmentProblemSolver::optimal);

I think the Cost will return a minimum Cost matrix, but what about the assignment variable?