replace magic number to constant
replace magic number to constant

doortts/fork-yobi,ihoneymon/yobi,brainagenet/yobi,ChangsungKim/TestRepository01,ChangsungKim/TestRepository01,bloodybear/yona,bloodybear/yona,brainagenet/yobi,doortts/forked-for-history,ahb0327/yobi,naver/yobi,doortts/fork-yobi,bloodybear/yona,yona-projects/yona,violetag/demo,doortts/forked-for-history,oolso/yobi,doortts/fork-yobi,doortts/forked-for-history,ahb0327/yobi,naver/yobi,oolso/yobi,oolso/yobi,ihoneymon/yobi,naver/yobi,Limseunghwan/oss,ahb0327/yobi,Limseunghwan/oss,yona-projects/yona,violetag/demo,yona-projects/yona,yona-projects/yona,Limseunghwan/oss,brainagenet/yobi,ihoneymon/yobi,doortts/fork-yobi,bloodybear/yona