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: 6091 - 9741 + 8943 + 4033 - 2984 + 4984 + 8503
Example Output: -7647

Example Input: 1078 + 2128 + 513 + 5898 - 8020
Example Output: 559

Example Input: 7251 - 5237 + 9664 + 8858 - 2298 + 9192 - 6516 - 6390
Example Output:
-22