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.

Example Input: 9776 + 5760 + 5961 - 1401 - 1368
Example Output: 824

Example Input: 9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794
Example Output: 8174

Example Input: 2520 - 5033 + 897 + 9014 - 1880 + 2882 + 7843 - 1784 - 4619
Example Output:
-4800