Given the boundaries of 2 intervals. Print the boundaries of their intersection.
Note: Boundaries mean the two ends of an interval which are the starting number and the ending number.
Input Only one line contains two intervals [l1,r1], [l2,r2] where (1≤l1,l2,r1,r2≤109), (l1≤r1,l2≤r2).
It's guaranteed that l1≤r1 and l2≤r2.
Output If there is an intersection between these 2 intervals print its boundaries , otherwise print -1.