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:
2303 + 151 - 7031 + 7349 - 8676 + 9084 + 9773

Ex Output:
-8347


Ex Input:
5798 + 7484 + 9307 + 3033 - 7750 + 6782 + 2330 + 2957 - 714

Ex Output:
-17631


Ex Input:
1806 - 7063 - 6365 + 4675 + 1258

Ex Output:

9301