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:
4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554

Ex Output:
-4365


Ex Input:
938 + 566 + 5270 + 5634 - 7451 - 114

Ex Output:
-2967


Ex Input:
3477 + 8970 + 2278 - 9906 - 106 - 208 - 1334

Ex Output:

3783