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: 2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551

Output: -6477


Input: Consider Input: 5773 - 2989 + 8993 + 6702 + 2237 - 1402 - 4236 - 1857

Output: -1675


Input: Consider Input: 9449 - 7064 - 3062 - 5484


Output: 25059