The Communications in Combinatorics and Optimization (CCO) is a newly established journal having two issues annually. The journal is devoted to advance and promote the theory and applications of combinatorics and optimization as well as interdisciplinary. It is aimed to publish original high quality refereed papers, occasionally survey articles and short notes. There are no fees for submitting, processing or publishing an article in Communications in Combinatorics and Optimization. CCO publishes 2 issues annually, the first issue at the end of June and the second issue at the end of December.