扫雷游戏程序，说明一下玩法，SXY,YXY,QXY,END分别代表踩雷，挖雷，取消挖雷和结束游戏，XY表示横纵坐标 -Mine games, explain games are played, SXY, YXY, QXY, END representing foot mine, dig mines, digging mines and the end of the game cancellation, XY said horizontal and vertical coordinates