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: 4647 - 2106 + 6760 + 3296 - 9772

Output: 6469


Input: Consider Input: 6844 - 1807 - 1809 + 4406 - 1450 - 5252 + 2685

Output: 10071


Input: Consider Input: 4539 - 7937 + 4505 + 2617 + 6044 - 3176 + 233 + 3395


Output: -1142