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:
1953 - 3854 - 1362 + 6267 - 3664 - 901 + 7969 + 111

Ex Output:
-2613


Ex Input:
9824 + 9255 - 8146 - 8393 - 6949 - 3238 + 2641 - 4068 + 4633

Ex Output:
24089


Ex Input:
4552 - 8851 + 7930 - 5613 - 392 - 1535 + 6620 + 6640

Ex Output:

-247