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:
1785 - 7105 - 7217 - 2262 - 9687 - 8283 - 9761 - 7664

Ex Output:
53764


Ex Input:
5708 + 4556 - 3280 - 4490 + 6094 - 4041

Ex Output:
6869


Ex Input:
6460 - 965 - 8201 + 8220 + 260

Ex Output:

7146