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: 5610 - 3034 + 9312 + 7337 + 2731 + 8581 + 5926 - 2102 + 2137

Output: -25278


Input: Consider Input: 8602 - 1293 - 8063 - 4529 + 453 - 6407

Output: 28441


Input: Consider Input: 8105 + 6250 + 4228


Output: -2373