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: 169 + 4940 + 7593 - 4532 + 2433 - 9730 - 6448 - 3026 - 2882

Output: 11821


Input: Consider Input: 306 + 2346 - 7752 + 7173

Output: -1461


Input: Consider Input: 5342 - 6456 - 9929 + 3119 - 1242 + 314


Output: 19536