Implement the paper “Seam Carving for Content-Aware Image Resizing” by Shai Avidan and Ariel Shamir (http://www.faculty.idc.ac.il/arik/SCWeb/imret/).

usage: image-seam-carving <image> <desired height> <desired width> <backward(b)/forward(f)> <seam(y)/no_seam(n)>