1. School of Computer and Information, Qiannan Normal University for Nationalities, Duyun, China
2. Key Laboratory of Complex Systems and Intelligent Optimization of Guizhou Province, Duyun, China
3. No. 2 High School of Duyun, Duyun, China
4. School of Mathematics and Statistics, Qiannan Normal University for Nationalities, Guizhou Duyun, China