In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Input: Consider Input: 693 # 2562 @ 733 # 3913 @ 310

Output: -4739


Input: Consider Input: 4368 # 7312 @ 7468 # 4833 # 1476 # 42

Output: -1827


Input: Consider Input: 6457 @ 882 # 4139 # 9537 # 8571


Output: -14908