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:
9403 + 6381 - 6599 - 2097 - 3046

Ex Output:
14764


Ex Input:
5355 - 3029 - 4426 - 467 + 3089 - 2982 - 4645 - 9070 - 3676

Ex Output:
30561


Ex Input:
1721 + 3505 - 10 - 845 - 4052 - 4497 + 2184 + 975

Ex Output:

4461