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Re:题意In Reply To:地方红小豆发挥 Posted by:chenweifeng at 2006-03-27 20:54:18 从x到y，第一步和最后一步必须是1，以后的步长必须是上一步大1步或者小一步或者相同，问需要多少步从x到y Followed by: Post your reply here: |
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