Daily Coding Problem: Problem #1391 [Medium]

Good morning! Here's your coding interview problem for today.

This problem was asked by Square.

Assume you have access to a function toss_biased() which returns 0 or 1 with a probability that's not 50-50 (but also not 0-100 or 100-0). You do not know the bias of the coin.

Write a function to simulate an unbiased coin toss.

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