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:
9350 + 2320 + 5626 - 4349

Ex Output:
5753


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

Ex Output:
3783


Ex Input:
3574 - 5975 + 6798 - 3026 + 852 - 1577 - 5740 - 9017 - 8516

Ex Output:

29775