Swap with Pointers

Read two integers. Write a function swap that takes two int pointers and swaps their values. Call it from main, then print the swapped values.

Input

• Line 1: the first integer
• Line 2: the second integer

Both values fit in an int (-2^31 <= x <= 2^31 - 1).

Output

The two integers swapped, space-separated, on one line.

Examples

Input:
3
7
Output: 7 3

Input:
10
10
Output: 10 10

Input:
-3
8
Output: 8 -3

Negative numbers swap through the pointers the same as any other value.