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: 2994 # 4380 @ 6720

Output: 5334


Input: Consider Input: 8227 # 7725 @ 669 @ 489 @ 6499 @ 2486

Output: 10645


Input: Consider Input: 6519 @ 3975 # 1429 # 3453 @ 3955 # 9240


Output: 327


