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。。原来是读入有问题。。

Posted by ltmyc at 2010-06-22 12:11:35 on Problem 2983
一开始是
==========
repeat
   readln(n,m);
   .....
until eof
=========
wa掉。。

后来调试很久,找不到问题,就改成
==========
repeat
   readln(n,m);
   if eof then break;
   .....
until eof
==========
AC。

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