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: 549 @ 2405 # 8368 @ 806 @ 5639
Example Output: 1031

Example Input: 8109 @ 8997 # 3310 # 8023 @ 2548 @ 9625 # 7170
Example Output: 10776

Example Input: 2037 @ 506 @ 8984 # 7379 @ 4289 # 1750 @ 9621 @ 3113 # 9043
Example Output:
10378