Fault-Tolerant Path is fixed-parameter tractable parameterized by the number of vulnerable or safe edges, but becomes W[1]-hard for the cost budget and remains open only for the redundancy k.
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When does FTP become FPT?
Fault-Tolerant Path is fixed-parameter tractable parameterized by the number of vulnerable or safe edges, but becomes W[1]-hard for the cost budget and remains open only for the redundancy k.