$$
\text{Cost of efforts} =
0.5 \times
\left[
\begin{pmatrix}
\color{#00CC66}{Green}\\
effort
\end{pmatrix}
+ 2 \times
\begin{pmatrix}
\color{#3399FF}{Blue}\\
effort
\end{pmatrix}
\right]
^{\Large{2}}
$$
$$
\text{Cost of efforts} =
0.5 \times
\left[
\begin{pmatrix}
\color{#3399FF}{Blue}\\
effort
\end{pmatrix}
+ 2 \times
\begin{pmatrix}
\color{#00CC66}{Green}\\
effort
\end{pmatrix}
\right]
^{\Large{2}}
$$