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: 8600 - 7082 + 49 + 8639 - 7036

Output: 14030


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

Output: 39740


Input: Consider Input: 2628 - 1986 - 7729 - 7942 - 484 + 8158


Output: 12611