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:
1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032

Ex Output:
-14416


Ex Input:
1701 + 3893 - 695 + 2870 + 5011

Ex Output:
-9378


Ex Input:
5113 - 642 + 8258 + 1465 - 8041 - 5343 - 2809 - 8128

Ex Output:

20353