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: 758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130

Output: 969


Input: Consider Input: 5113 - 8987 - 452

Output: 14552


Input: Consider Input: 1327 - 8507 - 2547 + 715


Output: 11666