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: 8885 - 9148 - 6665 - 7609 + 4183 + 3591 + 5158 - 5649 + 9511

Output: 15513


Input: Consider Input: 365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498

Output: 19761


Input: Consider Input: 6813 - 9750 - 903 - 2315 - 846 + 5872 + 5446 - 9809 + 4102


Output: 15016