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: 9910 + 9584 - 6394 - 5927

Output: 12647


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

Output: -15084


Input: Consider Input: 418 - 4425 + 5044 - 8213 + 4184 + 7013


Output: -3185