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: 5394 + 9787 - 7151 - 4774 - 6995 + 6101 - 1317

Output: 9743


Input: Consider Input: 3067 + 7337 + 5869 - 7973 + 761


Output: -2927