\documentclass[12pt]{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{rsfs}

\usepackage{graphicx}

\textheight 230mm
\topmargin 5mm
\textwidth 160mm
\oddsidemargin -2mm

\begin{document}
\thispagestyle{empty}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=16cm,height=2cm]{parity-1.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=5cm,height=9cm]{parity-2.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=7cm,height=5cm]{one-by-one.eps}
\includegraphics[width=7cm,height=5cm]{random-search.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=7cm,height=5cm]{one-by-one-linear.eps}
\includegraphics[width=6cm,height=4.5cm]{fictitious-quantum.eps}
\end{center}
\end{figure}


\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=6.3cm,height=5cm]{baldwin-1.eps}
\includegraphics[width=7.2cm,height=4.7cm]{baldwin-2.eps}
\end{center}
\end{figure}



\end{document}



