Instructions:
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$./Puzzle [options]:
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-h, --help show this help message and exit
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--dfs DFS Run Depth-first search (provide a positive integer max depth to search)
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--bfs Run Breadth-first search
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--idfs Run Iteractive Depth-first search
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--astar {1,2}, --a {1,2} Run A* search (1 -hamming; 2 -manhattan)
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--greedy {1,2}, --gulosa {1,2} Run Greedy search (1 -hamming; 2 -manhattan)
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--input INPUT, -i INPUT Specify an input file for tests
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Give initial board
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Give final board