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: 1163 - 3809 + 5176 - 2533 + 4885 - 8890 - 506 + 5874

Output: 966


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

Output: 5219


Input: Consider Input: 8141 - 3756 - 4461 + 2908


Output: 13450