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: 1075 - 4704 - 8582 + 2960 + 8010 + 617 - 4972 + 2013

Output: 5733


Input: Consider Input: 4272 + 6013 - 9409 - 6130 + 9575 + 2198

Output: 2025


Input: Consider Input: 1267 + 7705 + 4950 - 1422 + 8357 + 4137 - 5442


Output: -17018