hehe, this is a problem in middle school mathcounts
		
		
		
		 所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl 
		
		送交者: jxh 于 2006-2-25, 15:02:23:
回答: less than a second. I run it using guile, and the result is the same. 由 steven 于 2006-2-25, 10:53:22:
Can't use computer. 
 
所有跟贴:
加跟贴
	
 所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl