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: 1562 + 8343 + 8480

Output: -15261


Input: Consider Input: 9096 - 7913 + 7375 + 7790

Output: 1844


Input: Consider Input: 2622 - 5468 - 1289 - 1287


Output: 10666