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:
9084 # 8139 @ 4937

Ex Output:
5882


Ex Input:
6514 # 8296 # 4939 # 5783 @ 1077 @ 3237 @ 5941 # 7665 # 2408

Ex Output:
-12322


Ex Input:
6165 @ 9944 # 7355 @ 1154 # 9300

Ex Output:

608