Ampere's circuital law: finding enclosed current

Several wires carrying current into$(\otimes )$‍ or out$(\odot )$‍ of the plane of the screen are shown below.

Find the value of $\oint \mathbf{B}\cdot \mathbf{dl}$‍ for the loop shown.$\begin{array}{rl}& \\ & \end{array}$‍ Note: The loop is traversed in the direction shown in the figure.