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: 178 + 5236 - 8372 - 6825 + 1044 - 7818 - 4765 + 7418

Output: 14260


Input: Consider Input: 5630 - 3377 + 9205 - 4071 + 9580 - 7049

Output: 1342


Input: Consider Input: 3518 - 9286 - 7486


Output: 20290