Description: Wheelbarrow wheels have five kinds of colors, each one taking a cell color change, wheelbarrow can only push forward, you can rotate in place, each taking a cell, requires a unit of time, turn 90 degrees each time a unit needs , turn 180 degrees requires two units of time. Are given a 20 × 20 maze, a starting point, an end point and finish color, and asked how much time to reach at least wheelbarrow.
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独轮车.cpp