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: 3112 - 4832 - 7889 - 6855 - 5294 - 5908 + 9757 - 9064
Example Output: 33197

Example Input: 6054 - 4121 + 5615
Example Output: 4560

Example Input: 5266 + 5428 - 3607 + 8687 - 9180 - 8708
Example Output:
12646