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: 6110 @ 5036 # 9621 @ 7662 # 3509 # 7697 # 1663 @ 9388

Output: 5706


Input: Consider Input: 6896 @ 8548 @ 1670 @ 7550 # 921

Output: 23743


Input: Consider Input: 138 # 6668 @ 8458 @ 8166


Output: 10094