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.

Input: Consider Input: 1256 - 3248 - 3709 - 3019

Output: 11232


Input: Consider Input: 6667 - 31 + 1584 - 1542 - 6475 + 9319 + 2509 - 1895

Output: 3198


Input: Consider Input: 6359 + 7351 - 1182 - 5586 + 1284 - 8516 - 5143 + 1455


Output: 16696