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: 5945 + 1046 + 9187 + 929
Example Output: -5217

Example Input: 2671 + 3943 - 5777 + 7680
Example Output: -3175

Example Input: 9112 + 1802 - 3172 - 8615
Example Output:
19097