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: 7442 + 227 + 52 + 2436 - 3303 + 8408 + 4314

Output: -4692


Input: Consider Input: 240 - 438 + 497 - 5901 - 1960 + 4782 + 6400 - 4055

Output: 915


Input: Consider Input: 3121 - 8782 - 7541 - 5901 - 4459 - 6333


Output: 36137