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: 8197 @ 9504 @ 5465 # 6573 @ 8964 @ 6026

Output: 31583


Input: Consider Input: 1948 @ 7201 @ 611 # 9763 # 2998 # 5097 # 9302 # 3012 # 8272

Output: -28684


Input: Consider Input: 8790 @ 588 # 7871 @ 2609


Output: 4116