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: 7528 - 4788 + 7674 + 4839 + 6930 + 4883 + 9734

Output: -21744


Input: Consider Input: 743 - 5756 + 8649 - 2469 + 8650 - 5529


Output: -2802