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

Example Input: 6203 # 8978 # 1139 @ 240 # 4716
Example Output: -8390

Example Input: 1999 # 5055 @ 6736 # 8829 @ 7010 # 2968 # 259 @ 5904
Example Output: 4538

Example Input: 1658 @ 120 @ 4983 # 8602 # 3715 @ 9811
Example Output:
4255