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:
9616 - 8145 + 562 + 3160 - 8906 - 360 + 9291 + 7609 + 460

Ex Output:
5945


Ex Input:
6108 + 2133 + 8600

Ex Output:
-4625


Ex Input:
5027 + 4058 - 8225 + 9216 - 3101 + 8259 - 2376 - 6826 - 8997

Ex Output:

13019