This is an example programming model of ODMO program.
$$
\begin{align}
\underset{\boldsymbol{x} = [x_1, x_2]^T}{\min} & \quad ||\boldsymbol{x}||_2 \\
\text{s.t.} & \quad \boldsymbol{x} \in \mathbb{R}^2
\end{align}
$$
[Set] appropriate values below to describe your problem.