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14 December, 20:07

Dijkstra's algorithm may not terminate if the graph contains negative-weight edges

a) False. It always terminates after |E| relaxations and |V|+|E| priority queue operations, but may produce incorrect results.

b) True. It may not terminate and if it does after |E| relaxations and |V|+|E| priority queue operations, it may produce incorrect results.

c) True. It can never terminate as the negative-weight edges continuously reduce the shortest path weight even after |E| relaxations and |V|+|E| priority queue operations.

d) False. It can surely terminate as long as the negative-weight edges are not considered for the shortest path weight calculation among those |E| relaxations and |V|+|E| priority queue operations

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Answers (1)
  1. 14 December, 23:50
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    The answer is letter A.

    Explanation:

    False. It always terminates after |E| relaxations and |V|+|E| priority queue operations, but may produce incorrect results. Because the negative edges can reduce the distance, you may find a shorter distance, however since the node will be deleted it won't be uptaded. The nodes will be deleted from the priority queue.
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