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: 6142 + 418 - 7535 - 7185 - 5518 + 7544 - 1019 - 938 - 9490

Output: 29865


Input: Consider Input: 8294 + 6661 + 4555 + 6171

Output: -9093


Input: Consider Input: 6271 + 854 - 9057 - 167 + 3835


Output: 10806