I will participate a modeling competition, which spends three days.
I need a language which is fast and designed for modeling, such as to 2D/3D models.
I have considered these languages:

Python
Sage

Which languages would you use?
I would use C++, since it spends three days I would have time to write C++ code, and it's a lot faster then python, which would be my choice if it were a one day competition. So I would probably use C++ with OpenGL and SDL for the models. The simulations would I first write in C++, and if I had time at the end I would try to implement them in a shader if it were possible.
Most suitable language(s) for simulations in modeling?