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: 6589 - 9791 + 4411 + 1562 - 9983

Output: 20390


Input: Consider Input: 3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132

Output: 13626


Input: Consider Input: 678 + 1166 - 7776 - 4695 - 9090 + 1180 - 2398 + 726


Output: 21565