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: 9964 + 5009 - 6772 + 8761 + 2075 + 6292 + 4157 + 5194

Output: -14752


Input: Consider Input: 1231 + 6657 - 8263

Output: 2837


Input: Consider Input: 7045 - 578 - 5126 + 2266 + 3383 - 2559 + 7346


Output: 2313