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: 2226 - 7329 - 3547

Output: 13102


Input: Consider Input: 6108 + 6734 + 3016 + 637 - 2671 - 5486 - 1133 + 1713 - 2180

Output: 5478


Input: Consider Input: 9083 - 6210 + 1974 + 7731 - 2015 + 2274


Output: 5329