It sucks when I\'m doing a type of question that involves references and I can\'t even tell what my output should be like. Am I the only one who thinks output like this\n```\n{"$id":"1","next":{"$id":"2","next":{"$id":"3","next":{"$id":"4","next":{"$ref":"1"},"val":1},"val":0},"val":5},"val":3}\n```\nis completely unhelpful?\n\nWe already have tree visualization, I\'m sure we can add it to the actual and expected portion. I\'m also sure we can figure out some better ways to represent linked lists and graphs.

It sucks when I\'m doing a type of question that involves references and I can\'t even tell what my output should be like. Am I the only one who thinks output l