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: 6800 + 2564 + 8444 + 1912
Example Output: -6120

Example Input: 1626 + 448 + 6034
Example Output: -4856

Example Input: 3440 - 4204 - 1554 + 2189 - 317
Example Output:
7326