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: 7733 - 8455 - 6291 - 3837 - 994

Output: 27310


Input: Consider Input: 9982 + 267 - 3418 + 8741 - 63 - 1771 + 4720

Output: 1506


Input: Consider Input: 142 - 8516 + 3411 - 7932 - 4096 - 9446 - 9453 + 3707


Output: 32467