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: 3438 - 3865 - 956 - 3020 + 2696

Output: 8583


Input: Consider Input: 9001 + 6216 - 1478 + 5475 - 8693 - 3911 - 319 + 4768 - 320

Output: 7263


Input: Consider Input: 2198 + 4250 + 193 - 9835 - 9517 + 6598 + 2303 + 4603 + 5329


Output: -1726