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.

Example Input: 5753 - 4358 + 6312 + 2406 + 5334 - 4718 + 6262
Example Output: -5485

Example Input: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500
Example Output: -1201

Example Input: 2161 - 7128 + 4968
Example Output:
4321