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: 6054 - 4121 + 5615
Example Output: 4560

Example Input: 1561 - 5861 - 6887 - 8406 - 5941 - 3633
Example Output: 32289

Example Input: 4483 + 3021 - 5582 - 3918 + 8842
Example Output:
2120