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A small project has $12$ activities ā€“ $\text{N, P, Q, R, S, T, U, V, W, X, Y,}$ and $\text{Z}$. The relationship among these activities and the duration of these activities are given in the Table.

$$\begin{array}{|cl|cI|cI|}\hline
&\textbf{Activity} & \textbf{Duration} & \textbf{Depends} \\& &\textbf{(in weeks)}&\textbf{upon} \\ \hline &\text{$N$} & \text{$2$} & \text{-} \\ \hline &\text{P} & \text{$5$} & \text{N}\\ \hline &\text{Q} & \text{$3$} & \text{N} \\ \hline &\text{R} & \text{$4$} & \text{P}  \\ \hline &\text{S} & \text{$5$} & \text{Q}  \\ \hline  &\text{T} & \text{$8$} & \text{R} \\ \hline & \text{U} & \text{$7$} & \text{R, S} \\ \hline & \text{V} & \text{$2$} & \text{U} \\ \hline & \text{W} & \text{$3$} & \text{U}  \\ \hline & \text{X} & \text{$5$} & \text{T, V} \\ \hline & \text{Y} & \text{$1$} & \text{W} \\ \hline & \text{Z} & \text{$3$} & \text{X, Y} \\ \hline \end{array}$$

The total float of the activity $\text{ā€œVā€}$ (in weeks, in integer) is __________________
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