You get a supercomputer with infinite power and hexabyte input/output for one instant run. what do you do?

Suppose you have access to a supercomputer with infinite computing power, a exabyte input and a exabyte output. You can run exactly one program on it, which will complete instantly. What program would you choose to run, and why?

Clarification: - the program must be written already or writable in a programming language by someone in the world right now in reasonable time. “Curing cancer” or “a program to write another super AI program” is not a program we have the know how to write at the moment (unless you can tell me how you would do it) - “infinite power” in this context means that you get 0 disk latency and infinite CPU speed. One CPU (why would you need more?)

Edit: Grammar