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: 1785 - 7105 - 7217 - 2262 - 9687 - 8283 - 9761 - 7664
Example Output: 53764

Example Input: 7388 - 3073 - 1891 + 2180 + 1361 - 9381 + 566 - 2665
Example Output: 20291

Example Input: 3090 - 6695 + 8702 + 8176 + 4573 + 9133 - 373
Example Output:
-20426