\begin{Schunk}
\begin{Sinput}
 x <- c(4, 2, 1, 0, 3)
 y <- c(1, 2, 5, 0, 1)
 x + y
\end{Sinput}
\begin{Soutput}
[1] 5 4 6 0 4
\end{Soutput}
\begin{Sinput}
 y - x
\end{Sinput}
\begin{Soutput}
[1] -3  0  4  0 -2
\end{Soutput}
\end{Schunk}
