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

Output: 10645


Input: Consider Input: 7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731

Output: 24148


Input: Consider Input: 4274 @ 8692 # 763 @ 6836 # 8506 @ 7946 @ 5374 # 6099 # 1688


Output: 16066


