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: 2131 + 4513 + 3760 - 9342 + 7779 + 4653 + 3111
Example Output: -12343

Example Input: 1989 - 7828 - 4806 - 7481 + 9860 - 9696 - 7086 + 272 + 8952
Example Output: 19802

Example Input: 703 - 3123 + 624
Example Output:
3202