0cm 0pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一行包含两个整数</span><span lang="EN-US"><font face="Times New Roman">N</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</span><span lang="EN-US"><font face="Times New Roman">M</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha