\documentclass[11pt,a4paper,oneside]{article}

\usepackage[utf8x]{inputenc}
\usepackage[english,russian]{babel}
\usepackage{olymp}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{wrapfig}
\usepackage{float}
\usepackage{graphicx}
\usepackage{listings}
\usepackage{color}
\usepackage{cmap}
\usepackage{import}
\usepackage{comment}
\usepackage{epigraph}
\usepackage{expdlist}


\renewcommand{\t}[1]{\mbox{\texttt{#1}}}
\newcommand{\s}[1]{\mbox{``\texttt{#1}''}}
\renewcommand{\leq}{\leqslant}


\newcommand{\inputProblem}[1]{
\import{../problems/#1/statement/}{./#1.en.tex}
}

\contest%
{MIPT Training Camp 2014, Contest 1}%
{http://contest.yandex.ru/contest/846}%
{Wednesday, November 12, 2014}%

\begin{document}

\inputProblem{a}
\inputProblem{b}
\inputProblem{c}
\inputProblem{d}
\inputProblem{e}
\inputProblem{f}
\inputProblem{g}
\inputProblem{h}
\inputProblem{i}
\inputProblem{j}
\inputProblem{k}

\end{document}
