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:
2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551

Ex Output:
-6477


Ex Input:
1185 - 6431 + 1326 - 2840 - 9276

Ex Output:
18406


Ex Input:
9575 + 8702 - 3543 - 2442 + 5639 - 3722 - 3266

Ex Output:

8207