You are given a map consisting of a number of regions. Your task is to colour each region with one of four colours, in such a way that no two regions sharing a boundary have the same colour. You are provided with some regions already coloured, sufficient to make the remainder of the solution unique.
Only regions which share a length of border are required to be different colours. Two regions which meet at only one point (i.e. are diagonally separated) may be the same colour.
This app is integrated with Alphonso software. Subject to your permission, the Alphonso software receives short duration audio samples from the microphone on your device. The audio samples never leave your device, but are irreversibly encoded (hashed) into digital "fingerprints." The fingerprints are compared off-device to commercial content (e.g., TV, OTT programming, ads music etc.). If a match is found, then appropriate recommendation for content or ads may be delivered to your mobile device. The Alphonso software only matches against known audio content and does not recognize or understand human conversations or other sounds.