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: 634 # 6766 # 1458 # 4376 @ 9425
Example Output: -2541

Example Input: 4348 # 4282 # 5224 @ 4811 # 7961 @ 2562 # 7988 @ 4398 # 1282
Example Output:
-10618