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: 931 # 5023 @ 6056 # 4419 # 1833 @ 5052 @ 1632 # 2282 @ 9337

Output: 9451


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

Output: 10645


Input: Consider Input: 6443 # 911 @ 4665 # 8565


Output: 1632