class NimGameRev:
    """This is the NimGameRev. game_stub.py was used as the beginning
    shell code in reference to correct methods, inputs, and outputs.
    I entered the code for the game to be functional.
    """
    def get_initial_state(self):
        return {
            "board": [1, 3, 5, 7],
            "first_player": True
        }

    def get_next_state(self, state, action):
        next_state = {
            "board": state["board"].copy(),
            "first_player": not state["first_player"],
        }
        row,num_lines=action
        next_state["board"][row]-=num_lines
        return next_state

    """def get_actions(self, state):
        "initalize with actions"
        actions = [
            (0, 0), 
            (1, 0), (1, 1),
            (2, 0), (2, 1), (2, 2), 
            (3, 0), (3, 1), (3, 2), (3, 3),
        ]
        return actions"""
    
    def get_actions(self, state):
        actions = []
        for row_index, lines_in_row in enumerate(state["board"]):
            for num_lines_to_remove in range(1, lines_in_row + 1):
                actions.append((row_index, num_lines_to_remove))
        return actions

    def get_reward(self, state):
        if self.is_over(state):
            return -1 if state["first_player"] else 1
        return 0

    def is_over(self, state):
        """Determines if the game is over.
        Checks a condition, whether all rows are empty.
        If all rows are empty game is over.
        """
        return all(lines == 0 for lines in state["board"])

    def get_objective(self, state):
        return max if state["first_player"] else min