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

Output: -2890


Input: Consider Input: 6927 - 2357 + 8911 - 4674 - 2728 + 9726 - 1304 - 3277

Output: 2630


Input: Consider Input: 7735 + 1466 + 793 + 1695 + 8540 - 8486 - 3345 - 6506 + 9741


Output: 3837