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: 8053 - 8275 + 3672 - 7233 + 8748 - 1270 - 6997 - 7566 + 5689
Example Output: 21285

Example Input: 3672 + 2445 + 4715 - 5145 - 8515 + 3793 - 3753
Example Output: 10132

Example Input: 8896 - 4564 - 8333 + 807
Example Output:
20986