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: 6820 - 387 + 8290 - 9203 - 9292 + 9249 - 3079
Example Output: 11242

Example Input: 9964 + 5009 - 6772 + 8761 + 2075 + 6292 + 4157 + 5194
Example Output: -14752

Example Input: 8293 - 4243 - 6119 + 5292
Example Output:
13363