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: 556 + 5223 - 5888 + 4866

Output: -3645


Input: Consider Input: 8798 - 6887 - 9478 - 7713 + 8512 + 7926 - 8604 + 2947 + 7573

Output: 14522


Input: Consider Input: 8985 + 1522 - 6372 + 2613 - 4786


Output: 16008