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: 8109 @ 8997 # 3310 # 8023 @ 2548 @ 9625 # 7170

Output: 10776


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

Output: 8443


Input: Consider Input: 3778 @ 8938 # 8926 # 473


Output: 3317