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<html> A little bee on the honeycomb crawling shown below. When it is crawling, only to climb a large grid adjacent grid. For example, the 1st grid can climb to the 2nd or the 3rd grid, the 2nd, you can climb on the 3rd or the 4th grid. Will a figure one grid to climb a number of species practicable route, a total grid b. Input: namely, a starting point and end point b in number. (A and b between 1 and 100, and a