Coloring [0 1 0 1 1 0 2] seems to work for test case 2, giving it a chromatic number of 3 rather than 4.
yes.. corrected. Thanks for pointing it out :-)
Program an exclusive OR operation with logical operators
Solve the set of simultaneous linear equations
Return unique values without sorting
Magnet and Iron
Integer sequence - 2 : Kolakoski sequence
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