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:
8513 - 7119 - 47

Ex Output:
15679


Ex Input:
3284 - 2372 - 6880

Ex Output:
12536


Ex Input:
8041 + 4429 + 2230 + 8217 - 1142 - 5051 - 9565 + 5611

Ex Output:

3312