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: 2306 - 650 - 3209

Output: 6165


Input: Consider Input: 2969 - 5770 - 665 + 516 - 1172 + 4904 - 384

Output: 5540


Input: Consider Input: 6323 - 1528 - 8998 - 2179 + 3343 + 5149


Output: 10536