For questions related to the uniform-cost search (UCS) algorithm, also known as the cheapest-first search, which is the uninformative version of the A* algorithm. The UCS is very similar to Dijkstra's algorithm (originally introduced by Edsger W. Dijkstra in 1956 and published in the 1959 paper "A note on two problems in connexion with graphs"), which originated UCS, according to Norvig and Russell's book.

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