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: 3083 - 4468 - 7941 + 7484 + 2789

Output: 5219


Input: Consider Input: 6562 - 9064 - 1127 + 8483 + 5128 + 3972 - 4330 + 908 - 7990

Output: 10582


Input: Consider Input: 4150 - 5432 + 689 - 5547 + 7966 - 7277 + 4598


Output: 9153