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: 1260 + 6532 + 3162 + 7255

Output: -15689


Input: Consider Input: 3586 - 8301 + 9044 + 6100 - 8837 + 8230 + 7670 - 8406

Output: -1914


Input: Consider Input: 2980 - 6793 - 1879 + 5728 - 4199


Output: 10123