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: 4148 + 9216 - 5756 - 5558 + 2801 - 7501 + 1939 + 3102 + 6894

Output: -989


Input: Consider Input: 7240 - 3294 - 2859 + 1798 + 9958 - 6797


Output: 8434