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: 877 # 7761 # 7154 # 4993 # 2712
Example Output: -21743

Example Input: 345 @ 1076 @ 7948 # 854
Example Output: 8515

Example Input: 303 # 8925 # 5507 # 4671 @ 6948 @ 7362
Example Output:
-4490