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: 8600 - 7082 + 49 + 8639 - 7036
Example Output: 14030

Example Input: 1815 - 3167 - 773
Example Output: 5755

Example Input: 7289 + 1352 + 6125 + 5181 + 1946
Example Output:
-7315