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: 5798 + 7484 + 9307 + 3033 - 7750 + 6782 + 2330 + 2957 - 714

Output: -17631


Input: Consider Input: 3071 - 5299 + 206 + 3214 + 6040 + 5785 - 6760 - 8070

Output: 7955


Input: Consider Input: 4417 + 1723 + 4344 + 6728


Output: -8378