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: 2443 + 7109 + 4711

Output: -9377


Input: Consider Input: 3089 - 6778 - 3604 - 1052 - 1332

Output: 15855


Input: Consider Input: 107 + 9060 + 896 - 1933 - 8135 - 5609 - 2979 + 407 + 2975


Output: 5425