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: 4533 - 9566 - 2287 + 4647 + 5056 + 6340 + 777 - 4673 + 2170

Output: 2069


Input: Consider Input: 8085 + 9109 - 9653

Output: 8629


Input: Consider Input: 3541 - 1488 + 4290 + 116 + 7041 + 4667


Output: -11085