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: 3672 + 2445 + 4715 - 5145 - 8515 + 3793 - 3753

Output: 10132


Input: Consider Input: 1783 + 1887 + 6517 - 3342 + 4406 + 8123 + 5394 - 5058 + 8527

Output: -24671


Input: Consider Input: 172 + 7001 + 8727 - 1528


Output: -14028