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: 2982 + 9912 - 1386 + 7183 + 259 - 2370

Output: -10616


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

Output: -2890


Input: Consider Input: 573 - 4653 - 249 - 231 + 5826 - 974


Output: 854