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: 8403 + 1868 + 5827 + 5471 - 3746 + 1027 - 5777

Output: 3733


Input: Consider Input: 2367 + 2751 + 138 + 6347 + 5297

Output: -12166


Input: Consider Input: 1294 - 4752 - 8113 + 9201 + 8582 - 7189 + 2849


Output: 716