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: 8379 + 6247 - 4435 + 207 - 3793 + 7248 + 1488

Output: 1417


Input: Consider Input: 8838 + 1241 - 4918 - 8353 - 4691 - 5880

Output: 31439


Input: Consider Input: 9228 - 3625 - 833 - 5723 - 3458 + 7984 + 4881 + 1460


Output: 8542