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:
1163 - 3809 + 5176 - 2533 + 4885 - 8890 - 506 + 5874

Ex Output:
966


Ex Input:
1561 - 5861 - 6887 - 8406 - 5941 - 3633

Ex Output:
32289


Ex Input:
6879 + 387 + 5118 + 1149 + 4126 - 7405 - 8680 - 8071

Ex Output:

20255