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: 9990 - 8613 - 152 + 4529

Output: 14226


Input: Consider Input: 9634 + 5896 + 2965 + 6949 - 2226 + 9649 - 3599 - 7110

Output: -2890


Input: Consider Input: 5381 - 4733 + 6439 - 7314 - 6181 - 389 - 3874 - 8394


Output: 29827