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: 9909 - 1362 + 9804 + 5190 + 8223 - 3758

Output: -8188


Input: Consider Input: 2297 + 4208 + 9691 - 6995 + 738 + 1245 - 7806

Output: 1216


Input: Consider Input: 6719 + 4992 - 9453 + 4687 + 5175 - 2475 + 8362 - 9912


Output: 5343