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.

Input: Consider Input: 4533 - 9566 - 2287 + 4647 + 5056 + 6340 + 777 - 4673 + 2170

Output: 2069


Input: Consider Input: 2348 - 6075 + 2149 - 1926 - 9532 - 9774 + 2760 - 6500 + 8335

Output: 22911


Input: Consider Input: 8906 + 4208 - 2736 - 2748 - 5392 - 1216 - 3469 - 8131


Output: 28390