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:
4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237

Ex Output:
-8522


Ex Input:
5986 + 9293 + 3288 - 1791 + 6613 + 8185 - 7053

Ex Output:
-12549


Ex Input:
2769 + 8312 + 5167 - 5128 - 9210

Ex Output:

3628