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:
1785 - 7105 - 7217 - 2262 - 9687 - 8283 - 9761 - 7664

Ex Output:
53764


Ex Input:
6091 - 9741 + 8943 + 4033 - 2984 + 4984 + 8503

Ex Output:
-7647


Ex Input:
51 - 7299 - 6965 - 4586 + 6279

Ex Output:

12622