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: 5634 - 7997 + 8248 + 1465 - 3986

Output: 7904


Input: Consider Input: 9050 + 7188 + 3589 + 8762 + 268 + 1995 + 6080 - 4900

Output: -13932


Input: Consider Input: 2079 + 7141 + 2840 - 2126 - 2518 - 1526 + 9751


Output: -11483