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: 3186 + 271 - 7916

Output: 10831


Input: Consider Input: 1887 - 5213 + 516 - 4107 - 7681 - 125 - 1788 + 124 - 1460

Output: 21621


Input: Consider Input: 9465 - 4445 + 3824


Output: 10086