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.

Input: Consider Input: 6844 + 1340 - 4174 - 5664 + 4911 - 5241

Output: 15672

Input: Consider Input: 5000 + 8474 - 7071 - 6976 + 6373 - 466

Output: 4666

Input: Consider Input: 6546 + 5643 + 2713 + 2747 - 2179 - 8582 + 8171
Output: -1967