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: 4483 + 3021 - 5582 - 3918 + 8842

Output: 2120


Input: Consider Input: 3586 - 8301 + 9044 + 6100 - 8837 + 8230 + 7670 - 8406

Output: -1914


Input: Consider Input: 9936 - 9667 - 9674 + 5824


Output: 23453