Swap two number

Bunty is a 10 year old boy playing a game of swap the two numbers $A$ & $B$ and write them on a board in correct order. He is in confusion of doing this. So as a good boy$/$good girl help him by taking this two number $A$ and $B$ as input and after Swapping print the output on screen. ### Input - Input line contains two numbers $A$ and $B$. ### Output Output in a single line the two numbers aft