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: 6666 + 4068 + 1057 + 5398 + 7947

Output: -11804


Input: Consider Input: 3083 - 4468 - 7941 + 7484 + 2789

Output: 5219


Input: Consider Input: 1075 + 2179 + 2132 + 6333 + 8433 - 8868 - 1568 - 5987 - 5042


Output: 3463