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: 8625 - 7177 + 4191

Output: 11611


Input: Consider Input: 1011 - 5404 + 4286 - 549 - 4178 - 1559

Output: 8415


Input: Consider Input: 6110 + 5036 - 9621 + 7662 - 3509 - 7697 - 1663 + 9388


Output: 6514