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:
3631 - 7822 - 8283 + 4667 - 697

Ex Output:
15766


Ex Input:
2113 - 9339 + 3752 + 8710 + 3541 + 3240 + 6148 + 2019

Ex Output:
-15958


Ex Input:
6904 - 1007 + 9690 + 9967 + 9620 + 4765

Ex Output:

-26131