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:
365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498

Ex Output:
19761


Ex Input:
1649 + 4642 + 613 - 7051 - 8575

Ex Output:
12020


Ex Input:
9108 - 4141 - 8158 - 7726 + 3964 + 1927 + 9099

Ex Output:

14143