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: 5708 + 4556 - 3280 - 4490 + 6094 - 4041

Output: 6869


Input: Consider Input: 7272 + 8958 - 7231 + 6616

Output: -1071


Input: Consider Input: 3092 + 8177 - 9681 - 1170 - 5635


Output: 11401