vjudge-like features

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Description

Recently, there have been ongoing demands to implement certain features from vjudge, specifically, the ability to source the problems on other programming platforms.

The concept involves dummy accounts on the target platforms and their API to retrieve the results seamlessly.

It's important to note that the aforementioned process must not violate the corresponding TOS of those platform.

Solution

TBD

An abstract version of a judge should be created, wherein problems can be arbitrary taken and judged elsewhere.