In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Ex Input:
2367 + 2751 + 138 + 6347 + 5297

Ex Output:
-12166


Ex Input:
1344 + 7632 - 4322

Ex Output:
-1966


Ex Input:
4047 - 7628 - 9185 - 8947 - 7911 + 8209 - 6383 - 7968 + 6175

Ex Output:

37685