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: 4483 + 3021 - 5582 - 3918 + 8842

Output: 2120


Input: Consider Input: 7533 + 2213 - 7566 + 455 - 6321 - 2480 + 1023 + 2407

Output: 17802


Input: Consider Input: 3499 - 5093 - 8673 - 5949 + 5545 + 5193 - 2832


Output: 15308