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: 6904 # 1007 @ 9690 @ 9967 @ 9620 @ 4765
Example Output: 39939

Example Input: 123 # 6452 # 5554 # 9261 @ 6646
Example Output: -14498

Example Input: 8778 # 5183 @ 3989
Example Output:
7584