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: 8085 + 9109 - 9653

Output: 8629


Input: Consider Input: 5774 + 1888 + 5355 - 6957 - 7140 - 9762

Output: 22390


Input: Consider Input: 5229 - 4582 - 8116 + 1283 - 1941


Output: 18585