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:
3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170

Ex Output:
-23848


Ex Input:
1256 - 3248 - 3709 - 3019

Ex Output:
11232


Ex Input:
3136 + 2468 - 3966 + 3197 - 742 - 9364 + 3409

Ex Output:

8134