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.

Ex Input:
4035 - 7636 + 5719 + 8287 + 9317 - 8218 + 4932 + 2275 - 9347

Ex Output:
-1294


Ex Input:
7147 + 1234 - 7159 + 8304 - 934 + 3025 - 796 - 5291 - 2549

Ex Output:
11313


Ex Input:
4568 + 8020 - 8001 - 27 + 8373 + 4407 - 7940 - 8511 + 2152

Ex Output:

6095