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: 6485 + 8165 + 4482 - 4771 + 2626 + 5500 + 8702 - 1649 + 7002

Output: -23572


Input: Consider Input: 597 + 4303 + 4507 + 4779 - 8079

Output: -4913


Input: Consider Input: 1754 + 356 + 4424


Output: -3026