program sqrt
    implicit none
    integer :: i, j, k

    read *, i, j, k

    if ((i**0.5 + j**0.5) < k**0.5) then
        print *, "Yes"
    else if ((i**0.5 + j**0.5) > k**0.5) then
        print *, "No"
    end if

end program sqrt
