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: 9964 + 5009 - 6772 + 8761 + 2075 + 6292 + 4157 + 5194

Output: -14752


Input: Consider Input: 4274 - 4385 - 2316 - 7783

Output: 18758


Input: Consider Input: 3615 + 7429 + 6810 - 207 + 1232 - 5621 + 6745


Output: -12773