If Dijkstra's algorithm encounters a node with an estimate matching its true shortest distance, which consequence follows for the monovariant?

💡 Explanation

The monovariant in Dijkstra's algorithm represents the upper bound on the shortest-path estimate of unvisited nodes; because settled nodes have true shortest paths, the monovariant will always strictly decrease as new nodes are settled, therefore, the monovariant remains strictly decreasing rather than any other option.

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