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:
7312 - 1598 - 5813 - 8994 + 9174 - 4767 + 4076

Ex Output:
15234


Ex Input:
7266 - 5601 + 6292 - 3129 - 4781 - 6736 - 1566 - 7004

Ex Output:
29791


Ex Input:
5085 + 8015 - 3893 + 9577 + 103 - 2174 - 8908 + 5690

Ex Output:

-3325