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: 2653 + 9718 - 3237 + 2973 - 6895 - 18
Example Output: 112

Example Input: 1737 + 1422 + 9162 - 7244 + 6133
Example Output: -7736

Example Input: 7192 - 6838 - 9054 - 8802 + 9503 + 9086 + 6779 - 4701
Example Output:
11219