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

Ex Output:
32289


Ex Input:
1943 + 6084 + 8719 + 2400 + 8595 - 7077 + 1264

Ex Output:
-18042


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

Ex Output:

-1294