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:
7312 - 1598 - 5813 - 8994 + 9174 - 4767 + 4076

Ex Output:
15234


Ex Input:
5279 - 2949 - 9227 - 4200 - 3399 - 5680 - 9769 + 7051 + 2369

Ex Output:
31083


Ex Input:
1898 - 9131 + 2102 - 7713 - 9064 + 352 + 2935 + 387

Ex Output:

22030