翻译成英语：如果圈长为奇数则x2至少和v4。。。vn-2之间有边
If the circumference is odd, there is at least one edge between x2 and v4, ..., vn-2.
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If the circumference is odd, there is at least one edge between x2 and v4, ..., vn-2.
原文地址: https://www.cveoy.top/t/topic/bzZ9 著作权归作者所有。请勿转载和采集!