integer::T,i,j
  real*8,parameter::xi=1.0_8,yi=0_8,pi=3.141592653589793238,cos50=0.64278760968
  real*8,allocatable::xy(:,:,:)
  real*8::x,y,kakudo
  character*20::ans

  read *,T
  allocate (xy(2,6,T))
  read *,xy

  do i=1,T
     do j=1,6
        x = xy(1,j,i)
        y = xy(2,j,i)
        kakudo = DATAN2(y,x)*180.0_8/pi
        if(kakudo.gt.-0.0000001.and.kakudo.lt.(50+10**(-7))) then
           write (ans,'(F18.10)'), kakudo
           print '(a)', TRIM(ADJUSTL(ans))
        end if
     end do
  end do
end program