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题目是不是有问题?请看内容

Posted by hoho at 2003-11-14 18:32:10 on Problem 1590 
题目说:
Note that O (zero) and 0 (the letter) are considered the same character and therefore ONLY the letter "0" is a valid character

我贴到记事本看了一下发现前一个是字母O,题目说是zero,后一个是零,题目说是the letter
而且引号里那个是0,并且"0 is a valid character",但是输入里却是字母,到底是怎么回事?
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