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: 2226 - 7329 - 3547
Example Output: 13102

Example Input: 4733 + 1935 - 5989 + 2634 - 6798 + 9853 + 9265 - 14 - 4165
Example Output: -1988

Example Input: 5753 - 329 + 9950 + 3693
Example Output:
-7561