change the comparison of cosets in `scan_and_fill`
change the comparison of cosets in `scan_and_fill`

rahuldan/sympy,madan96/sympy,yashsharan/sympy,kaushik94/sympy,jaimahajan1997/sympy,skidzo/sympy,postvakje/sympy,yashsharan/sympy,souravsingh/sympy,aktech/sympy,skidzo/sympy,souravsingh/sympy,rahuldan/sympy,sampadsaha5/sympy,sampadsaha5/sympy,drufat/sympy,jaimahajan1997/sympy,drufat/sympy,chaffra/sympy,skidzo/sympy,drufat/sympy,postvakje/sympy,jaimahajan1997/sympy,yashsharan/sympy,chaffra/sympy,kaushik94/sympy,aktech/sympy,souravsingh/sympy,madan96/sympy,aktech/sympy,madan96/sympy,rahuldan/sympy,chaffra/sympy,postvakje/sympy,sampadsaha5/sympy,kaushik94/sympy