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

Ex Input:
5604 # 514 # 150 @ 4349 @ 958 # 6247 # 8710

Ex Output:
-4710


Ex Input:
2405 @ 2160 @ 394 # 8936 # 2551 @ 5734 @ 5167

Ex Output:
4373


Ex Input:
5854 # 7480 # 7603 @ 4500

Ex Output:

-4729