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: 569 + 2078 + 2757 - 9211

Output: 4945


Input: Consider Input: 9196 - 3791 - 4139 - 2814 - 8634


Output: 28574