Question

I£®¿Æѧ¼Ò·¢ÏÖغÍè¾ö¶¨»ùÒòÊÇغÍè·¢ÓýµÄ±ØÒªÌõ¼þ£¬ÈËغÍè¾ö¶¨»ùÒòλÓÚYȾɫÌåÉÏ£¬µ±º¬¸Ã»ùÒòµÄÒ»¶ÎYȾɫÌåÒƽӣ¨Ò×룩µ½ÆäËûȾɫÌåÉÏ£¬ÈËȺÖлá³öÏÖÐÔȾɫÌå×éÐÍΪXXµÄÄÐÐÔ£¨Ã¿20000ÃûÄÐ×ÓÖÐÓÐÒ»¸ö£©¡£ÏÂͼΪij¼Òϵ»¼¼×ÖÖÒÅ´«²¡£¨ÓÃB»òb±íʾ£©µÄÒÅ´«Í¼Æ×£¬3ºÍ8²»Ð¯´øÖ²¡»ùÒò£¬Í¼ÖÐ6ºÅΪÐÔȾɫÌå×éÐÍΪXXµÄÄÐÐÔ¡£Çë·ÖÎö»Ø´ð£º

 
£¨1£©¼×ÖÖÒÅ´«²¡µÄÖ²¡»ùÒòλÓڣߣߣߣßȾɫÌåÉÏ£¬ÊôÓڣߣߣߣßÒÅ´«²¡¡£7ºÅ¸öÌåºÍ8ºÅ¸öÌåÔÙÉúÒ»¸ö»¼¼×ÒÅ´«²¡Å®º¢µÄ¼¸ÂÊÊǣߣߣߣߡ£
£¨2£©6ºÅ¸öÌåµÄغÍè¾ö¶¨»ùÒò¿ÉÄÜλÓÚʲôȾɫÌåÉÏ£¿£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß¡£Æä±äÒìÀàÐÍÊôÓڣߣߣߣߣߣߣߣߡ£
II£®¹ûÓ¬ÖÐD£®d»ùÒòλÓÚXȾɫÌåÉÏ£¬dÊÇÒþÐÔ¿ÉÖÂËÀ»ùÒò£¨µ¼ÖÂÒþÐÔµÄÊܾ«ÂѲ»ÄÜ·¢Óý£¬µ«XdµÄÅä×ÓÓлîÐÔ£©¡£ÄÜ·ñÑ¡Ôñ³ö´ÆÐÛ¹ûÓ¬ÔÓ½»£¬Ê¹ºó´úÖ»ÓдÆÐÔ£¿Çë×÷³öÅжϣ¬²¢¸ù¾ÝÇ×´úºÍ×Ó´ú»ùÒòÐÍÇé¿ö˵Ã÷ÀíÓÉ¡££ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß£ß

Answer 1

¢ñ£¨1£©X£»ÒþÐÔ£»0      
£¨2£©³£È¾É«ÌåÉÏ»òXȾɫÌåÉÏ£»È¾É«Ìå½á¹¹±äÒì
¢ò£®²»ÄÜ£»¹ûÓ¬ÖУ¬ÐÛÐÔÖ»ÓÐX^DY¸öÌ壬ÐÛÐÔÓÐX^DX^dºÍX^DX^DµÄ¸öÌ壬´ÆÐÛ¹ûÓ¬µÄÁ½ÖÖÔÓ½»×éºÏÖоù»á³öÏÖX^DYµÄÐÛÐÔ¸öÌå¡££¨ÆäËüºÏÀíÒ²¿É£©

½âÎö