 We also obtain an adversarially robust algorithm for the L_2-heavy hitters problem using%DIFDELCMD < \mathcal{O}\left(%%% \frac{\log n{\epsilon^2}}%DIFDELCMD < \right) %%% bits of space.
<meaning-changed>  We also obtain an adversarially robust algorithm for the L_2-heavy hitters problem using%DIFDELCMD < \mathcal{O}\left(%%% \frac{\log n{\epsilon^2}}%DIFDELCMD < \right) %%% bits of space.
 We also obtain an adversarially robust algorithm for the L_2-heavy hitters problem using%DIFDELCMD < \mathcal{O}\left(%%% {\epsilon^2}}%DIFDELCMD < \right) %%% bits of space.