已知房子的长宽高，以及壁纸每张的面积，求装修房子所需壁纸的数目-Decorate the house number required for wallpaper

模拟鼠标按键1，模拟鼠标按键2，模拟鼠标按键3(Every time when the New Year is coming, my mother will go to the flower market to buy some fresh and beautiful flower to decorate our house. I like to go there with her, because I can gain the knowledge about flowers, at the s