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\title{Exposing a Cheater in Contest #XYZ} \author{A Concerned Competitive Programmer} \date{\today} \maketitle
\section*{Introduction} It has come to my attention that a participant in a recent Codeforces contest may have engaged in cheating by having a higher-rated user submit solutions on their behalf. This behavior not only violates the spirit of fair competition but also undermines the integrity of the platform. I believe it is important to bring this to light with the evidence I have gathered.
\section*{The Evidence} During Contest #XYZ, user \textbf{[Cheater's Username]} achieved a significantly higher rank than usual. Upon closer inspection, I noticed that the solution submitted for Problem A (and other problems) was identical to that of another user, \textbf{[Higher-rated User's Username]}, who has a considerably higher rating and experience in competitive programming.
The suspicious points are as follows: \begin{itemize} \item Both users submitted the \textbf{exact same solution} for multiple problems within a short time frame. \item The coding style, variable names, and even the comments were identical, which is highly unlikely unless the code was copied. \item \textbf{[Cheater's Username]} has no history of solving problems with such efficiency or accuracy in previous contests, which raises further doubts. \end{itemize}
\section*{Comparison of Solutions} For reference, here is a comparison of the solutions submitted by the two users for Problem A:
