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: 1616 - 440 + 11
Example Output: 2045

Example Input: 6562 - 9064 - 1127 + 8483 + 5128 + 3972 - 4330 + 908 - 7990
Example Output: 10582

Example Input: 7325 - 399 + 8953 + 4030 - 6614 + 3002
Example Output:
-1647