极限挑战四

练习内容

93856427\n84767538\n75678649\n66589751\n57491862\n48312973\n39223184\n21334295\n12445316\n94967538\n85878649\n76789751\n67691862\n58512973\n49423184\n31334295\n22445316\n13556427\n95978649\n86889751\n