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Bus Route Optimizer

Bus Route Optimizer

HardGraphs0% accepted

Find the minimum number of bus route changes needed to travel between two stops in a city bus network.

Approach

Given M bus routes, each a sequence of stops, find the minimum number of route switches to go from source stop to destination stop.

Input

3 1 2 7 3 6 7 4 6 8 1 8

Output

2
solution.py
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Test 1
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Test 3

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