\providecommand{\ntables}{7}\providecommand{\algatables}{\StrLeft{ HCMA}{\ntables}}\providecommand{\algbtables}{\StrLeft{ LSfminbnd posik noiseless}{\ntables}}\providecommand{\algctables}{\StrLeft{ LSstep posik noiseless}{\ntables}}
\begin{tabularx}{1.0\textwidth}{@{}c@{}|*{5}{@{}r@{}X@{}}|@{}r@{}@{}l@{}}
\#FEs/D & \multicolumn{2}{@{}c@{}}{0.5} & \multicolumn{2}{@{}c@{}}{1.2} & \multicolumn{2}{@{}c@{}}{3} & \multicolumn{2}{@{}c@{}}{10} & \multicolumn{2}{@{}c@{}}{50} & \multicolumn{2}{@{}l@{}}{\#succ}\\\hline
\textbf{f21} & \multicolumn{2}{@{}c@{}}{\textit{4.0e+1}:3.9 \quad} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+1}:11 \quad} & \multicolumn{2}{@{}c@{}}{\textit{1.6e+1}:31 \quad} & \multicolumn{2}{@{}c@{}}{\textit{6.3e+0}:73 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{1.6e+0}:347 } & 5 & /5\\
\algatables\hspace*{\fill} & \textbf{3} & \textbf{.3}\mbox{\tiny (2)} & \textbf{2} & \textbf{.0}\mbox{\tiny (2)} & \textbf{0} & \textbf{.89}\mbox{\tiny (0.2)}$^{\star}$ & \textbf{2} & \textbf{.5}\mbox{\tiny (6)} & \textbf{4} & \textbf{.6}\mbox{\tiny (8)} & 15 & /15\\
\algbtables\hspace*{\fill} & 5 & .2\mbox{\tiny (7)} & 3 & .7\mbox{\tiny (3)} & 10 & \mbox{\tiny (28)} & 55 & \mbox{\tiny (131)} & 43 & \mbox{\tiny (40)} & 15 & /15\\
\algctables\hspace*{\fill} & 150 & \mbox{\tiny (204)} & 115 & \mbox{\tiny (171)} & 312 & \mbox{\tiny (813)} & 454 & \mbox{\tiny (479)} & 325 & \mbox{\tiny (433)} & 5 & /15
\end{tabularx}