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

Input: Consider Input: 8238 @ 9817 # 2474 @ 3673 @ 9625 # 849 @ 1441

Output: 29471


Input: Consider Input: 519 @ 5751 @ 8900 @ 3476 # 8727 # 9607 # 350 @ 8481

Output: 8443


Input: Consider Input: 2619 # 3339 @ 5903


Output: 5183


