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: 3337 + 9906 + 9733 - 853 + 5075 - 2064 + 9450 - 3886

Output: -24024


Input: Consider Input: 8798 - 6887 - 9478 - 7713 + 8512 + 7926 - 8604 + 2947 + 7573

Output: 14522


Input: Consider Input: 6017 - 7575 + 2535 + 1864 - 714


Output: 9907