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: 643 @ 9262 # 6489 @ 1803 @ 6271
Example Output: 11490

Example Input: 9741 # 8583 @ 2183 # 5623 @ 4144 # 4064 @ 3416 @ 9350 @ 4931
Example Output: 15495

Example Input: 7985 @ 448 # 9564 @ 2574
Example Output:
1443