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: 6492 - 3901 + 3666 + 9196 - 3917 - 133
Example Output: 1581

Example Input: 1462 + 1045 - 6631 - 4510 + 2234 + 4084 - 6610 + 2698
Example Output: 9152

Example Input: 4688 - 4301 - 9301 - 7246 - 6377 + 8027 + 425 + 3557
Example Output:
19904