HDU 1992 Tiling a Grid With Dominoes(轮廓线dp || 插头dp 简讲)
ProblemDescriptionWewishtotileagrid4unitshighandNunitslongwithrectangles(dominoes)2unitsbyoneunit(ineitherorientation).Forexample,thefigureshowsthefivedifferentwaysthatagrid4unitshighand2unitswidemayb