\documentclass[12pt,psfig,epsf]{article}
\setlength{\topmargin}{-1in}
\setlength{\textheight}{10in}
\setlength{\textwidth}{5.5in}
\usepackage{epsfig}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage{graphicx}
\begin{document}
\begin{center}
{\Large\bfseries Problem test}\\
{\large\bf Hello World}\\
{\large Input File: {\em test.in}}\\
{\large Time Limit: {\em 1 Second}}\\
\end{center}
Output hello world !
\vspace*{.3in} \noindent {\large \bfseries Input File Format}\\
Input consists of several datasets. ...
\vspace*{.3in} \noindent {\large \bfseries Output Format}\\
For each dataset, ....
\vspace*{.3in} \noindent {\large \bfseries Sample Input}
\begin{verbatim}
morris
\end{verbatim}
\vspace*{.3in} \noindent {\large \bfseries Output for the Sample Input}
\begin{verbatim}
hello morris !
\end{verbatim}
\end{document}