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: 1462 + 1045 - 6631 - 4510 + 2234 + 4084 - 6610 + 2698

Output: 9152


Input: Consider Input: 6927 - 2357 + 8911 - 4674 - 2728 + 9726 - 1304 - 3277

Output: 2630


Input: Consider Input: 8677 + 1792 - 9401 + 5946


Output: 10340