feat: p0 and p1

search/test_cases/q6/CONFIG

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+class: "Q6PartialCreditQuestion"
+max_points: "3"
+depends: "q4"

search/test_cases/q6/corner_sanity_1.solution

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+# In order for a heuristic to be admissible, the value
+# of the heuristic must be less at each state than the
+# true cost of the optimal path from that state to a goal.
+cost: "8"
+path: """
+North South South East East East North North
+"""

search/test_cases/q6/corner_sanity_1.test

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+class: "CornerHeuristicSanity"
+points: "1"
+
+# The following specifies the layout to be used 
+layout: """
+%%%%%%
+%.  .%
+%P   %
+%.  .%
+%%%%%%
+"""
+

search/test_cases/q6/corner_sanity_2.solution

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+# In order for a heuristic to be admissible, the value
+# of the heuristic must be less at each state than the
+# true cost of the optimal path from that state to a goal.
+cost: "8"
+path: """
+West North North East East East South South
+"""

search/test_cases/q6/corner_sanity_2.test

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+class: "CornerHeuristicSanity"
+points: "1"
+
+# The following specifies the layout to be used 
+layout: """
+%%%%%%
+%.  .%
+% %% %
+%.P%.%
+%%%%%%
+"""
+

search/test_cases/q6/corner_sanity_3.solution

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+# In order for a heuristic to be admissible, the value
+# of the heuristic must be less at each state than the
+# true cost of the optimal path from that state to a goal.
+cost: "28"
+path: """
+South South South West West West West East East East East East North
+North North North North West West West South South South West West
+North North North
+"""

search/test_cases/q6/corner_sanity_3.test

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+class: "CornerHeuristicSanity"
+points: "1"
+
+# The following specifies the layout to be used 
+layout: """
+%%%%%%%%
+%.%   .%
+% % %  %
+% % %P %
+%   %  %
+%%%%%  %
+%.    .%
+%%%%%%%%
+"""
+

search/test_cases/q6/medium_corners.solution

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+# This solution file specifies the length of the optimal path
+# as well as the thresholds on number of nodes expanded to be
+# used in scoring.
+cost: "106"
+path: """
+North East East East East North North West West West West North North
+North North North North North North West West West West South South
+East East East East South South South South South South West West
+South South South West West East East North North North East East East
+East East East East East South South East East East East East North
+North East East North North East East North North East East East East
+South South South South East East North North East East South South
+South South South North North North North North North North West West
+North North East East North North
+"""
+thresholds: "2000 1600 1200"

search/test_cases/q6/medium_corners.test

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+class: "CornerHeuristicPacman"
+
+# The following specifies the layout to be used 
+layout: """
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%.      % % %              %.%
+%       % % %%%%%% %%%%%%% % %
+%       %        %     % %   %
+%%%%% %%%%% %%% %% %%%%% % %%%
+%   % % % %   %    %     %   %
+% %%% % % % %%%%%%%% %%% %%% %
+%       %     %%     % % %   %
+%%% % %%%%%%% %%%% %%% % % % %
+% %           %%     %     % %
+% % %%%%% % %%%% % %%% %%% % %
+%   %     %      % %   % %%% %
+%.  %P%%%%%      % %%% %    .%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+"""