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can i modify some key into non-integer values?

Posted by ahyangyi at 2007-04-01 14:34:46 on Problem 3214

for example,
    7
   / \
  4   5
 / \ / \
3  4 2 5

in this case, if I can modify the 2 into something like "4.5", the answer will be 1, otherwise I'll have to modify at least 3 keys.

Followed by:

integral values are demanded (209) frkstyc 2007-04-01 14:36:26
- thank you:) (0) ahyangyi 2007-04-01 14:47:26

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