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.

Example Input: 7746 - 2667 + 1801 - 5756 - 6076 - 6701 + 3002
Example Output: 24143

Example Input: 9982 + 267 - 3418 + 8741 - 63 - 1771 + 4720
Example Output: 1506

Example Input: 5820 - 7983 - 3749 + 9201 + 6193
Example Output:
2158