Hello! I have been stuck on this problem for a while, h. Here is what it asks:↵
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"Given an array say, determine if it is possible to choose a set of differenstinct subarrays of length 2$2$ such that every index is taken at least once."↵
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A set of subarrays is considered distinct if no two subarrays have equal elements. For example, $[1, 2, 2],[1,2]$ is not a valid set, while $[1,3],[1,2]$ is.↵
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As an example, let's consider the array $[1,2,1, 2, 3]$ w. We can choose $[1,2], [2,1], [2,3]$, corresponding to the indices $[1,2], [2,3], [4,5]$ (indexed from $1$). ↵
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The problemis this one: can be found [here](https://mirror.codeforces.com/gym/103999/problem/D).↵
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I have heard that thisiscan be solvableed with $2$2SAT?, but I have no ideea how. I have never solved a $2$2SAT problem similar to this one, and I don't know what I am missing, b. Basically, I don't get how I canunderstand how to construct a graph such that it solves this tasks (or if it can be solved in another way).↵
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Any help, similar problem(s), or hints would be much appreciated t. Thanks!
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As an example, let's consider the array $[1,2,1,
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The problem
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I have heard that this
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Any help, similar problem(s), or hints would be much appreciated
