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: 7308 + 5010 + 6882

Output: -4584


Input: Consider Input: 569 + 2078 + 2757 - 9211

Output: 4945


Input: Consider Input: 7116 - 2245 - 8689


Output: 18050