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: 9910 + 9584 - 6394 - 5927

Output: 12647


Input: Consider Input: 8769 - 3041 - 6567 + 1136 + 3380 + 4191 + 2049 + 7794 - 4291

Output: 4118


Input: Consider Input: 8695 - 5705 + 957 - 7767 + 7907 + 2779 - 8531 + 4709


Output: 14346