{"trustable":false,"sections":[{"title":"","value":{"format":"PLAIN","content":"Please Download The Full Problem Set From Given Link in Announcement."}},{"title":"Sample I/O 1","value":{"format":"PLAIN","content":"Input\n\n3 3\n1 3\n1 2\n2 3\n\nOutput\n\n0\n"}},{"title":"Sample I/O 2","value":{"format":"PLAIN","content":"Input\n\n7 8\n1 2\n1 3\n2 4\n3 4\n4 5\n4 6\n5 7\n6 7\n\nOutput\n\n3"}}]}