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:
5806 - 3876 - 963 + 1876 - 3233 + 3527 + 6012 + 2124

Ex Output:
339


Ex Input:
2862 - 964 + 1644

Ex Output:
2182


Ex Input:
4379 - 3298 - 1476 + 5297 + 4742

Ex Output:

-886