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: 8398 - 1163 + 8396 + 4440 + 9289

Output: -12564


Input: Consider Input: 519 - 9471 - 7173 - 34 - 5123 + 9104 - 2340 + 7208 - 3693

Output: 12041


Input: Consider Input: 6330 - 3946 + 4262 + 6808 + 6204


Output: -6998