{"trustable":false,"sections":[{"title":"","value":{"format":"PLAIN","content":"Sample Input\n8\n1 1 2 2\n5 7 8 8\n2 2 5 5\n2 2 5 5\n6 3 8 6\n6 3 8 5\n6 3 8 8\n3 6 7 8\n8\n1 1 2 2\n5 7 8 8\n2 2 5 5\n2 2 5 5\n6 3 8 6\n6 3 8 5\n6 3 8 8\n3 6 7 8\n0\n\nSample Output\n1 1\n5 8\n2 4\n4 2\n7 3\n8 5\n6 6\n3 7\n1 1\n5 8\n2 4\n4 2\n7 3\n8 5\n6 6\n3 7"}}]}