use as_coeff_Mul in Add.flatten
use as_coeff_Mul in Add.flatten

AkademieOlympia/sympy,beni55/sympy,souravsingh/sympy,jaimahajan1997/sympy,MridulS/sympy,yukoba/sympy,kevalds51/sympy,oliverlee/sympy,jerli/sympy,kevalds51/sympy,sunny94/temp,lidavidm/sympy,ChristinaZografou/sympy,garvitr/sympy,MridulS/sympy,mafiya69/sympy,moble/sympy,liangjiaxing/sympy,iamutkarshtiwari/sympy,Mitchkoens/sympy,amitjamadagni/sympy,ahhda/sympy,wanglongqi/sympy,kaichogami/sympy,sahilshekhawat/sympy,AunShiLord/sympy,lidavidm/sympy,jamesblunt/sympy,Titan-C/sympy,ahhda/sympy,Gadal/sympy,Arafatk/sympy,grevutiu-gabriel/sympy,cccfran/sympy,emon10005/sympy,postvakje/sympy,MechCoder/sympy,atreyv/sympy,moble/sympy,sampadsaha5/sympy,AunShiLord/sympy,skidzo/sympy,abhiii5459/sympy,VaibhavAgarwalVA/sympy,diofant/diofant,shikil/sympy,sunny94/temp,Sumith1896/sympy,shipci/sympy,kumarkrishna/sympy,ChristinaZografou/sympy,Mitchkoens/sympy,mafiya69/sympy,oliverlee/sympy,srjoglekar246/sympy,atreyv/sympy,toolforger/sympy,ga7g08/sympy,atreyv/sympy,abloomston/sympy,wanglongqi/sympy,toolforger/sympy,yashsharan/sympy,madan96/sympy,chaffra/sympy,Designist/sympy,Vishluck/sympy,pandeyadarsh/sympy,bukzor/sympy,jerli/sympy,Shaswat27/sympy,rahuldan/sympy,jbbskinny/sympy,farhaanbukhsh/sympy,shikil/sympy,Mitchkoens/sympy,saurabhjn76/sympy,Gadal/sympy,kmacinnis/sympy,sahmed95/sympy,yukoba/sympy,VaibhavAgarwalVA/sympy,wyom/sympy,Sumith1896/sympy,jaimahajan1997/sympy,meghana1995/sympy,saurabhjn76/sympy,lidavidm/sympy,hrashk/sympy,skidzo/sympy,asm666/sympy,hrashk/sympy,mcdaniel67/sympy,asm666/sympy,maniteja123/sympy,sampadsaha5/sympy,drufat/sympy,jerli/sympy,ga7g08/sympy,beni55/sympy,cswiercz/sympy,Arafatk/sympy,shipci/sympy,vipulroxx/sympy,maniteja123/sympy,farhaanbukhsh/sympy,debugger22/sympy,rahuldan/sympy,Curious72/sympy,AkademieOlympia/sympy,shikil/sympy,madan96/sympy,vipulroxx/sympy,sahilshekhawat/sympy,atsao72/sympy,ga7g08/sympy,aktech/sympy,debugger22/sympy,sahmed95/sympy,dqnykamp/sympy,pbrady/sympy,MechCoder/sympy,grevutiu-gabriel/sympy,oliverlee/sympy,Arafatk/sympy,Davidjohnwilson/sympy,Vishluck/sympy,garvitr/sympy,skidzo/sympy,madan96/sympy,postvakje/sympy,kaichogami/sympy,abloomston/sympy,sunny94/temp,Gadal/sympy,abhiii5459/sympy,kumarkrishna/sympy,pandeyadarsh/sympy,kevalds51/sympy,moble/sympy,kaushik94/sympy,liangjiaxing/sympy,abloomston/sympy,iamutkarshtiwari/sympy,atsao72/sympy,asm666/sympy,souravsingh/sympy,bukzor/sympy,ahhda/sympy,yashsharan/sympy,lindsayad/sympy,pbrady/sympy,cswiercz/sympy,kmacinnis/sympy,dqnykamp/sympy,souravsingh/sympy,emon10005/sympy,jamesblunt/sympy,vipulroxx/sympy,MridulS/sympy,toolforger/sympy,Titan-C/sympy,MechCoder/sympy,Designist/sympy,skirpichev/omg,Designist/sympy,meghana1995/sympy,hargup/sympy,lindsayad/sympy,liangjiaxing/sympy,mafiya69/sympy,yukoba/sympy,jaimahajan1997/sympy,shipci/sympy,beni55/sympy,grevutiu-gabriel/sympy,sampadsaha5/sympy,pandeyadarsh/sympy,jbbskinny/sympy,Titan-C/sympy,postvakje/sympy,Shaswat27/sympy,ChristinaZografou/sympy,debugger22/sympy,Davidjohnwilson/sympy,hrashk/sympy,cccfran/sympy,atsao72/sympy,aktech/sympy,pbrady/sympy,kaichogami/sympy,hargup/sympy,VaibhavAgarwalVA/sympy,Curious72/sympy,Curious72/sympy,mcdaniel67/sympy,cswiercz/sympy,jbbskinny/sympy,kaushik94/sympy,Vishluck/sympy,hargup/sympy,sahmed95/sympy,dqnykamp/sympy,maniteja123/sympy,drufat/sympy,jamesblunt/sympy,cccfran/sympy,bukzor/sympy,lindsayad/sympy,saurabhjn76/sympy,yashsharan/sympy,garvitr/sympy,aktech/sympy,abhiii5459/sympy,Shaswat27/sympy,wyom/sympy,minrk/sympy,AkademieOlympia/sympy,rahuldan/sympy,kumarkrishna/sympy,wanglongqi/sympy,meghana1995/sympy,amitjamadagni/sympy,sahilshekhawat/sympy,flacjacket/sympy,kmacinnis/sympy,AunShiLord/sympy,chaffra/sympy,Sumith1896/sympy,minrk/sympy,emon10005/sympy,mcdaniel67/sympy,wyom/sympy,iamutkarshtiwari/sympy,kaushik94/sympy,drufat/sympy,chaffra/sympy,farhaanbukhsh/sympy,Davidjohnwilson/sympy