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:
7403 - 3327 + 5889 + 1034 + 1607 - 313

Ex Output:
2513


Ex Input:
9035 + 4523 - 1766 - 2420 - 8735 - 7008

Ex Output:

24441