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: 3844 - 5783 + 7487

Output: 2140


Input: Consider Input: 5394 + 9787 - 7151 - 4774 - 6995 + 6101 - 1317

Output: 9743


Input: Consider Input: 9527 + 6918 - 8061 + 5215 - 9625


Output: 15080