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: 808 - 4935 + 288 + 9758 + 8690 + 384 + 4674 + 5769 - 8736

Output: -15084


Input: Consider Input: 8379 + 6247 - 4435 + 207 - 3793 + 7248 + 1488

Output: 1417


Input: Consider Input: 7984 + 6495 - 493 + 9778 + 4875 - 8001


Output: -4670