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: 2010 + 6744 - 5577 - 1182 + 8811

Output: -6786


Input: Consider Input: 1137 - 2413 - 5470 - 9797 + 2566

Output: 16251


Input: Consider Input: 8297 - 573 - 2652


Output: 11522