THIS is a algo program data is {'edges': [[1, 2], [1, 4], [2, 4], [3, 4]], 'nodes': [[1, 'S'], [2, 'D'], [3, 'D'], [4, 'I']]} [[1, 'S'], [2, 'D'], [3, 'D'], [4, 'I']] [[1, 2], [1, 4], [2, 4], [3, 4]]
