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: 1075 - 4704 - 8582 + 2960 + 8010 + 617 - 4972 + 2013
Example Output: 5733

Example Input: 509 + 4840 + 5618 + 9163 + 802
Example Output: -19914

Example Input: 6283 + 9193 + 8489 - 7064 - 5436
Example Output:
1101