Editorial for SAC '22 Code Challenge 5 P4 - Querying Intervals


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Author: maxcruickshanks

Realize that all the intervals can be merged to allow for easier checking.

Merge the intervals through some data structure (either built-in or some user-defined one) and then, for each query, binary search for the first interval that has an endpoint after this and check that it covers the entire range of [L_i, R_i].

Time Complexity: \mathcal{O}(N \log N + Q \log N)


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