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: 9488 + 7771 + 5889 + 9584 + 3302 - 1602 + 5806 - 8895 - 8030

Output: -4337


Input: Consider Input: 1616 - 440 + 11

Output: 2045


Input: Consider Input: 6971 + 533 - 4153 - 8739 + 1912 + 6137 - 1861 + 1766


Output: 11376