1. Department of Mathematics, Guizhou University, Guiyang, People's Republic of China
2. Department of Mathematics and statistics, Shanxi Datong University, Datong, People's Republic of China
3. Gui'an Supercomputing Center, Kechuang Industrial Development Company Limited, Guiyang, People's Republic of China
4. School of Mathematics and Quantitative Economics, Guangxi University of Finance and Economics, Nanning, People's Republic of China