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: 4725 - 7780 + 1028 - 6858 + 9194 + 4680 - 3421 + 362 - 8573

Output: 16093


Input: Consider Input: 8054 + 1780 + 3011 - 3819


Output: 7082