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: 3583 - 967 - 3552 + 7898 - 1248 + 6992 - 5291 + 819
Example Output: -1068

Example Input: 7442 + 227 + 52 + 2436 - 3303 + 8408 + 4314
Example Output: -4692

Example Input: 4603 + 4822 + 9768 - 7921
Example Output:
-2066