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: 2372 + 1272 - 6861 - 1715 - 7374 + 9798 - 7485

Output: 14737


Input: Consider Input: 2656 + 7901 + 7760 + 5393 + 606


Output: -19004