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: 9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868

Output: -4036

Input: Consider Input: 3428 - 8444 - 2270 - 3241 - 1368 - 8884 - 6840 - 5265

Output: 39740

Input: Consider Input: 712 - 4158 - 5693 - 2778 + 1553
Output: 11788