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: 4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561

Output: 7572


Input: Consider Input: 3709 + 206 - 4363 + 3129 + 2506

Output: 2231


Input: Consider Input: 6594 + 3899 - 8471 + 4027 + 5148 + 8590 + 8805 - 4238


Output: -11166