７＊７方格去掉四角各四个各，剩下３３个格除中间以外其他都放满牌，一长牌跳过另一张牌，被跳过的牌会被移走，求最后只剩中间一张牌的算法？-7 * 7 1.40 removed the box four of the remaining 33 in addition to the middle lattice outside are filled with other licensing, a long licensing skip another card, skip the license will be removed and left for the middle of a licensing algorithm?