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: 7298 + 5069 + 5167 + 9387 - 6886

Output: -5439


Input: Consider Input: 4284 - 8233 + 2781 - 2769 - 5560 + 635 - 1706 + 1965 + 6794

Output: 10377


Input: Consider Input: 4982 + 6468 + 2760 + 5850 + 9095 - 5535 - 1604 + 2447 + 8020


Output: -22519