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: 452 # 5631 # 8307 # 1886 @ 4631 @ 1695 @ 4411 # 769

Output: -5404


Input: Consider Input: 5010 # 2117 @ 6121 # 6244 @ 1089 @ 5871

Output: 9730


Input: Consider Input: 9135 # 7978 @ 761 @ 4159 # 5712 @ 1172


Output: 1537