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: 6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474

Output: 11817


Input: Consider Input: 371 - 7789 + 1933


Output: 6227